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Finding the Fourth Proportional to 54,737.40, 82,127.70 and 21,451.80

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Solution

The fourth proportional to 54,737.40, 82,127.70 and 21,451.80 is: 32,186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,737.40 : 82,127.70 = 21,451.80 : x
  2. Step 2: Convert to fraction form
    54,737.40/82,127.70 = 21,451.80/x
  3. Step 3: Cross multiply
    54,737.40x = 82,127.70 × 21,451.80
  4. Step 4: Simplify right side
    54,737.40x = 1,761,786,994.86
  5. Step 5: Solve for x
    x = 1,761,786,994.86/54,737.40
  6. Step 6: Final answer
    x = 32,186.17

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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.