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Finding the Fourth Proportional to 76,687,999.60, 115,031,999.40 and 59,555,916.40

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Solution

The fourth proportional to 76,687,999.60, 115,031,999.40 and 59,555,916.40 is: 89,333,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,687,999.60 : 115,031,999.40 = 59,555,916.40 : x
  2. Step 2: Convert to fraction form
    76,687,999.60/115,031,999.40 = 59,555,916.40/x
  3. Step 3: Cross multiply
    76,687,999.60x = 115,031,999.40 × 59,555,916.40
  4. Step 4: Simplify right side
    76,687,999.60x = 6,850,836,139,591,250
  5. Step 5: Solve for x
    x = 6,850,836,139,591,250/76,687,999.60
  6. Step 6: Final answer
    x = 89,333,874.60

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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.