Home / 57,031.92-78,703.90-31,190.48

Finding the Fourth Proportional to 57,031.92, 78,703.90 and 31,190.48

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Solution

The fourth proportional to 57,031.92, 78,703.90 and 31,190.48 is: 43,042.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,031.92 : 78,703.90 = 31,190.48 : x
  2. Step 2: Convert to fraction form
    57,031.92/78,703.90 = 31,190.48/x
  3. Step 3: Cross multiply
    57,031.92x = 78,703.90 × 31,190.48
  4. Step 4: Simplify right side
    57,031.92x = 2,454,812,418.87
  5. Step 5: Solve for x
    x = 2,454,812,418.87/57,031.92
  6. Step 6: Final answer
    x = 43,042.78

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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.