Home / 85,850,172.80-128,775,259.20-28,351,318.40

Finding the Fourth Proportional to 85,850,172.80, 128,775,259.20 and 28,351,318.40

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Solution

The fourth proportional to 85,850,172.80, 128,775,259.20 and 28,351,318.40 is: 42,526,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850,172.80 : 128,775,259.20 = 28,351,318.40 : x
  2. Step 2: Convert to fraction form
    85,850,172.80/128,775,259.20 = 28,351,318.40/x
  3. Step 3: Cross multiply
    85,850,172.80x = 128,775,259.20 × 28,351,318.40
  4. Step 4: Simplify right side
    85,850,172.80x = 3,650,948,375,621,729
  5. Step 5: Solve for x
    x = 3,650,948,375,621,729/85,850,172.80
  6. Step 6: Final answer
    x = 42,526,977.60

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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.