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Finding the Fourth Proportional to 66,731,421.60, 100,097,132.40 and 52,398,698.40

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Solution

The fourth proportional to 66,731,421.60, 100,097,132.40 and 52,398,698.40 is: 78,598,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731,421.60 : 100,097,132.40 = 52,398,698.40 : x
  2. Step 2: Convert to fraction form
    66,731,421.60/100,097,132.40 = 52,398,698.40/x
  3. Step 3: Cross multiply
    66,731,421.60x = 100,097,132.40 × 52,398,698.40
  4. Step 4: Simplify right side
    66,731,421.60x = 5,244,959,451,332,468
  5. Step 5: Solve for x
    x = 5,244,959,451,332,468/66,731,421.60
  6. Step 6: Final answer
    x = 78,598,047.60

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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.