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Finding the Fourth Proportional to 66,472.76, 91,680.54 and 42,601.66

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Solution

The fourth proportional to 66,472.76, 91,680.54 and 42,601.66 is: 58,757.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472.76 : 91,680.54 = 42,601.66 : x
  2. Step 2: Convert to fraction form
    66,472.76/91,680.54 = 42,601.66/x
  3. Step 3: Cross multiply
    66,472.76x = 91,680.54 × 42,601.66
  4. Step 4: Simplify right side
    66,472.76x = 3,905,743,193.70
  5. Step 5: Solve for x
    x = 3,905,743,193.70/66,472.76
  6. Step 6: Final answer
    x = 58,757.05

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1.5x scale

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.