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Finding the Fourth Proportional to 71,472.04, 99,083.16 and 67,680.18

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Solution

The fourth proportional to 71,472.04, 99,083.16 and 67,680.18 is: 93,826.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,472.04 : 99,083.16 = 67,680.18 : x
  2. Step 2: Convert to fraction form
    71,472.04/99,083.16 = 67,680.18/x
  3. Step 3: Cross multiply
    71,472.04x = 99,083.16 × 67,680.18
  4. Step 4: Simplify right side
    71,472.04x = 6,705,966,103.77
  5. Step 5: Solve for x
    x = 6,705,966,103.77/71,472.04
  6. Step 6: Final answer
    x = 93,826.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.