Home / 51,720.72-77,581.12-16,660.32

Finding the Fourth Proportional to 51,720.72, 77,581.12 and 16,660.32

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Solution

The fourth proportional to 51,720.72, 77,581.12 and 16,660.32 is: 24,990.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,720.72 : 77,581.12 = 16,660.32 : x
  2. Step 2: Convert to fraction form
    51,720.72/77,581.12 = 16,660.32/x
  3. Step 3: Cross multiply
    51,720.72x = 77,581.12 × 16,660.32
  4. Step 4: Simplify right side
    51,720.72x = 1,292,526,285.16
  5. Step 5: Solve for x
    x = 1,292,526,285.16/51,720.72
  6. Step 6: Final answer
    x = 24,990.49

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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.