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Finding the Fourth Proportional to 72,324,134.40, 108,486,201.60 and 43,602,700.80

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Solution

The fourth proportional to 72,324,134.40, 108,486,201.60 and 43,602,700.80 is: 65,404,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,324,134.40 : 108,486,201.60 = 43,602,700.80 : x
  2. Step 2: Convert to fraction form
    72,324,134.40/108,486,201.60 = 43,602,700.80/x
  3. Step 3: Cross multiply
    72,324,134.40x = 108,486,201.60 × 43,602,700.80
  4. Step 4: Simplify right side
    72,324,134.40x = 4,730,291,389,293,281
  5. Step 5: Solve for x
    x = 4,730,291,389,293,281/72,324,134.40
  6. Step 6: Final answer
    x = 65,404,051.20

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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.