Home / 56,616.11-78,131.21-31,123.55

Finding the Fourth Proportional to 56,616.11, 78,131.21 and 31,123.55

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Solution

The fourth proportional to 56,616.11, 78,131.21 and 31,123.55 is: 42,951.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,616.11 : 78,131.21 = 31,123.55 : x
  2. Step 2: Convert to fraction form
    56,616.11/78,131.21 = 31,123.55/x
  3. Step 3: Cross multiply
    56,616.11x = 78,131.21 × 31,123.55
  4. Step 4: Simplify right side
    56,616.11x = 2,431,720,894.13
  5. Step 5: Solve for x
    x = 2,431,720,894.13/56,616.11
  6. Step 6: Final answer
    x = 42,951.04

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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.