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Finding the Fourth Proportional to 56,122.80, 84,281.40 and 54,373.20

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Solution

The fourth proportional to 56,122.80, 84,281.40 and 54,373.20 is: 81,653.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,122.80 : 84,281.40 = 54,373.20 : x
  2. Step 2: Convert to fraction form
    56,122.80/84,281.40 = 54,373.20/x
  3. Step 3: Cross multiply
    56,122.80x = 84,281.40 × 54,373.20
  4. Step 4: Simplify right side
    56,122.80x = 4,582,649,418.48
  5. Step 5: Solve for x
    x = 4,582,649,418.48/56,122.80
  6. Step 6: Final answer
    x = 81,653.97

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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.