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Finding the Fourth Proportional to 66,902.77, 92,440.57 and 64,508.00

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Solution

The fourth proportional to 66,902.77, 92,440.57 and 64,508.00 is: 89,131.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,902.77 : 92,440.57 = 64,508.00 : x
  2. Step 2: Convert to fraction form
    66,902.77/92,440.57 = 64,508.00/x
  3. Step 3: Cross multiply
    66,902.77x = 92,440.57 × 64,508.00
  4. Step 4: Simplify right side
    66,902.77x = 5,963,156,359.39
  5. Step 5: Solve for x
    x = 5,963,156,359.39/66,902.77
  6. Step 6: Final answer
    x = 89,131.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.