Home / 72,980,779.60-100,713,515.09-39,941,009.40

Finding the Fourth Proportional to 72,980,779.60, 100,713,515.09 and 39,941,009.40

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Solution

The fourth proportional to 72,980,779.60, 100,713,515.09 and 39,941,009.40 is: 55,118,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,980,779.60 : 100,713,515.09 = 39,941,009.40 : x
  2. Step 2: Convert to fraction form
    72,980,779.60/100,713,515.09 = 39,941,009.40/x
  3. Step 3: Cross multiply
    72,980,779.60x = 100,713,515.09 × 39,941,009.40
  4. Step 4: Simplify right side
    72,980,779.60x = 4,022,599,452,916,732
  5. Step 5: Solve for x
    x = 4,022,599,452,916,732/72,980,779.60
  6. Step 6: Final answer
    x = 55,118,614.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.