Home / 57,047.40-78,728.19-31,553.66

Finding the Fourth Proportional to 57,047.40, 78,728.19 and 31,553.66

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Solution

The fourth proportional to 57,047.40, 78,728.19 and 31,553.66 is: 43,545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,047.40 : 78,728.19 = 31,553.66 : x
  2. Step 2: Convert to fraction form
    57,047.40/78,728.19 = 31,553.66/x
  3. Step 3: Cross multiply
    57,047.40x = 78,728.19 × 31,553.66
  4. Step 4: Simplify right side
    57,047.40x = 2,484,162,381.91
  5. Step 5: Solve for x
    x = 2,484,162,381.91/57,047.40
  6. Step 6: Final answer
    x = 43,545.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.