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Finding the Fourth Proportional to 48,081.87, 72,122.87 and 12,543.17

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Solution

The fourth proportional to 48,081.87, 72,122.87 and 12,543.17 is: 18,814.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,081.87 : 72,122.87 = 12,543.17 : x
  2. Step 2: Convert to fraction form
    48,081.87/72,122.87 = 12,543.17/x
  3. Step 3: Cross multiply
    48,081.87x = 72,122.87 × 12,543.17
  4. Step 4: Simplify right side
    48,081.87x = 904,649,090.04
  5. Step 5: Solve for x
    x = 904,649,090.04/48,081.87
  6. Step 6: Final answer
    x = 18,814.77

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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.