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Finding the Fourth Proportional to 72,819.40, 100,439.01 and 48,608.17

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Solution

The fourth proportional to 72,819.40, 100,439.01 and 48,608.17 is: 67,044.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,819.40 : 100,439.01 = 48,608.17 : x
  2. Step 2: Convert to fraction form
    72,819.40/100,439.01 = 48,608.17/x
  3. Step 3: Cross multiply
    72,819.40x = 100,439.01 × 48,608.17
  4. Step 4: Simplify right side
    72,819.40x = 4,882,156,472.71
  5. Step 5: Solve for x
    x = 4,882,156,472.71/72,819.40
  6. Step 6: Final answer
    x = 67,044.72

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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.