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Finding the Fourth Proportional to 66,414,569.40, 99,696,503.70 and 51,335,350.20

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Solution

The fourth proportional to 66,414,569.40, 99,696,503.70 and 51,335,350.20 is: 77,060,725.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,414,569.40 : 99,696,503.70 = 51,335,350.20 : x
  2. Step 2: Convert to fraction form
    66,414,569.40/99,696,503.70 = 51,335,350.20/x
  3. Step 3: Cross multiply
    66,414,569.40x = 99,696,503.70 × 51,335,350.20
  4. Step 4: Simplify right side
    66,414,569.40x = 5,117,954,931,155,096
  5. Step 5: Solve for x
    x = 5,117,954,931,155,096/66,414,569.40
  6. Step 6: Final answer
    x = 77,060,725.94

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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.