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Finding the Fourth Proportional to 66,433,601.70, 99,650,402.55 and 40,605,569.10

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Solution

The fourth proportional to 66,433,601.70, 99,650,402.55 and 40,605,569.10 is: 60,908,353.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,433,601.70 : 99,650,402.55 = 40,605,569.10 : x
  2. Step 2: Convert to fraction form
    66,433,601.70/99,650,402.55 = 40,605,569.10/x
  3. Step 3: Cross multiply
    66,433,601.70x = 99,650,402.55 × 40,605,569.10
  4. Step 4: Simplify right side
    66,433,601.70x = 4,046,361,306,586,841
  5. Step 5: Solve for x
    x = 4,046,361,306,586,841/66,433,601.70
  6. Step 6: Final answer
    x = 60,908,353.65

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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.