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Finding the Fourth Proportional to 48,479.96, 72,711.84 and 13,423.16

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Solution

The fourth proportional to 48,479.96, 72,711.84 and 13,423.16 is: 20,132.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,479.96 : 72,711.84 = 13,423.16 : x
  2. Step 2: Convert to fraction form
    48,479.96/72,711.84 = 13,423.16/x
  3. Step 3: Cross multiply
    48,479.96x = 72,711.84 × 13,423.16
  4. Step 4: Simplify right side
    48,479.96x = 976,022,662.21
  5. Step 5: Solve for x
    x = 976,022,662.21/48,479.96
  6. Step 6: Final answer
    x = 20,132.50

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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.