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Finding the Fourth Proportional to 60,721.80, 91,082.70 and 43,007.10

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Solution

The fourth proportional to 60,721.80, 91,082.70 and 43,007.10 is: 64,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,721.80 : 91,082.70 = 43,007.10 : x
  2. Step 2: Convert to fraction form
    60,721.80/91,082.70 = 43,007.10/x
  3. Step 3: Cross multiply
    60,721.80x = 91,082.70 × 43,007.10
  4. Step 4: Simplify right side
    60,721.80x = 3,917,202,787.17
  5. Step 5: Solve for x
    x = 3,917,202,787.17/60,721.80
  6. Step 6: Final answer
    x = 64,510.65

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Similar ratio
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1.5x scale

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.