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Finding the Fourth Proportional to 72,497,364.60, 108,746,046.90 and 69,710,446.20

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Solution

The fourth proportional to 72,497,364.60, 108,746,046.90 and 69,710,446.20 is: 104,565,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,497,364.60 : 108,746,046.90 = 69,710,446.20 : x
  2. Step 2: Convert to fraction form
    72,497,364.60/108,746,046.90 = 69,710,446.20/x
  3. Step 3: Cross multiply
    72,497,364.60x = 108,746,046.90 × 69,710,446.20
  4. Step 4: Simplify right side
    72,497,364.60x = 7,580,735,451,885,128
  5. Step 5: Solve for x
    x = 7,580,735,451,885,128/72,497,364.60
  6. Step 6: Final answer
    x = 104,565,669.30

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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.