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Finding the Fourth Proportional to 56,221.80, 84,429.90 and 54,472.20

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Solution

The fourth proportional to 56,221.80, 84,429.90 and 54,472.20 is: 81,802.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,221.80 : 84,429.90 = 54,472.20 : x
  2. Step 2: Convert to fraction form
    56,221.80/84,429.90 = 54,472.20/x
  3. Step 3: Cross multiply
    56,221.80x = 84,429.90 × 54,472.20
  4. Step 4: Simplify right side
    56,221.80x = 4,599,082,398.78
  5. Step 5: Solve for x
    x = 4,599,082,398.78/56,221.80
  6. Step 6: Final answer
    x = 81,802.48

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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.