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Finding the Fourth Proportional to 71,867,999.40, 107,801,999.10 and 54,861,887.40

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Solution

The fourth proportional to 71,867,999.40, 107,801,999.10 and 54,861,887.40 is: 82,292,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,867,999.40 : 107,801,999.10 = 54,861,887.40 : x
  2. Step 2: Convert to fraction form
    71,867,999.40/107,801,999.10 = 54,861,887.40/x
  3. Step 3: Cross multiply
    71,867,999.40x = 107,801,999.10 × 54,861,887.40
  4. Step 4: Simplify right side
    71,867,999.40x = 5,914,221,136,119,101
  5. Step 5: Solve for x
    x = 5,914,221,136,119,101/71,867,999.40
  6. Step 6: Final answer
    x = 82,292,831.10

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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.