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Finding the Fourth Proportional to 48,423.56, 72,639.50 and 13,363.20

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Solution

The fourth proportional to 48,423.56, 72,639.50 and 13,363.20 is: 20,045.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,423.56 : 72,639.50 = 13,363.20 : x
  2. Step 2: Convert to fraction form
    48,423.56/72,639.50 = 13,363.20/x
  3. Step 3: Cross multiply
    48,423.56x = 72,639.50 × 13,363.20
  4. Step 4: Simplify right side
    48,423.56x = 970,696,099.58
  5. Step 5: Solve for x
    x = 970,696,099.58/48,423.56
  6. Step 6: Final answer
    x = 20,045.95

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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.