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Finding the Fourth Proportional to 80,697,701.60, 121,046,552.40 and 71,123,890.40

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Solution

The fourth proportional to 80,697,701.60, 121,046,552.40 and 71,123,890.40 is: 106,685,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,697,701.60 : 121,046,552.40 = 71,123,890.40 : x
  2. Step 2: Convert to fraction form
    80,697,701.60/121,046,552.40 = 71,123,890.40/x
  3. Step 3: Cross multiply
    80,697,701.60x = 121,046,552.40 × 71,123,890.40
  4. Step 4: Simplify right side
    80,697,701.60x = 8,609,301,726,195,458
  5. Step 5: Solve for x
    x = 8,609,301,726,195,458/80,697,701.60
  6. Step 6: Final answer
    x = 106,685,835.60

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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.