Home / 80,901,507,938.40-121,352,261,907.60-51,587,505,813.60

Finding the Fourth Proportional to 80,901,507,938.40, 121,352,261,907.60 and 51,587,505,813.60

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Solution

The fourth proportional to 80,901,507,938.40, 121,352,261,907.60 and 51,587,505,813.60 is: 77,381,258,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,901,507,938.40 : 121,352,261,907.60 = 51,587,505,813.60 : x
  2. Step 2: Convert to fraction form
    80,901,507,938.40/121,352,261,907.60 = 51,587,505,813.60/x
  3. Step 3: Cross multiply
    80,901,507,938.40x = 121,352,261,907.60 × 51,587,505,813.60
  4. Step 4: Simplify right side
    80,901,507,938.40x = 6,260,260,516,651,825,364,992
  5. Step 5: Solve for x
    x = 6,260,260,516,651,825,364,992/80,901,507,938.40
  6. Step 6: Final answer
    x = 77,381,258,720.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.