Home / 57,109.72-86,049.92-47,331.68

Finding the Fourth Proportional to 57,109.72, 86,049.92 and 47,331.68

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Solution

The fourth proportional to 57,109.72, 86,049.92 and 47,331.68 is: 71,316.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,109.72 : 86,049.92 = 47,331.68 : x
  2. Step 2: Convert to fraction form
    57,109.72/86,049.92 = 47,331.68/x
  3. Step 3: Cross multiply
    57,109.72x = 86,049.92 × 47,331.68
  4. Step 4: Simplify right side
    57,109.72x = 4,072,887,277.47
  5. Step 5: Solve for x
    x = 4,072,887,277.47/57,109.72
  6. Step 6: Final answer
    x = 71,316.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.