Home / 56,614.87-78,129.49-31,122.31

Finding the Fourth Proportional to 56,614.87, 78,129.49 and 31,122.31

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Solution

The fourth proportional to 56,614.87, 78,129.49 and 31,122.31 is: 42,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,614.87 : 78,129.49 = 31,122.31 : x
  2. Step 2: Convert to fraction form
    56,614.87/78,129.49 = 31,122.31/x
  3. Step 3: Cross multiply
    56,614.87x = 78,129.49 × 31,122.31
  4. Step 4: Simplify right side
    56,614.87x = 2,431,569,700.57
  5. Step 5: Solve for x
    x = 2,431,569,700.57/56,614.87
  6. Step 6: Final answer
    x = 42,949.31

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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.