Home / 57,721.20-86,581.80-51,816.30

Finding the Fourth Proportional to 57,721.20, 86,581.80 and 51,816.30

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Solution

The fourth proportional to 57,721.20, 86,581.80 and 51,816.30 is: 77,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.20 : 86,581.80 = 51,816.30 : x
  2. Step 2: Convert to fraction form
    57,721.20/86,581.80 = 51,816.30/x
  3. Step 3: Cross multiply
    57,721.20x = 86,581.80 × 51,816.30
  4. Step 4: Simplify right side
    57,721.20x = 4,486,348,523.34
  5. Step 5: Solve for x
    x = 4,486,348,523.34/57,721.20
  6. Step 6: Final answer
    x = 77,724.45

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Similar ratio
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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.