Home / 56,726.28-78,283.92-31,235.28

Finding the Fourth Proportional to 56,726.28, 78,283.92 and 31,235.28

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Solution

The fourth proportional to 56,726.28, 78,283.92 and 31,235.28 is: 43,105.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,726.28 : 78,283.92 = 31,235.28 : x
  2. Step 2: Convert to fraction form
    56,726.28/78,283.92 = 31,235.28/x
  3. Step 3: Cross multiply
    56,726.28x = 78,283.92 × 31,235.28
  4. Step 4: Simplify right side
    56,726.28x = 2,445,220,160.70
  5. Step 5: Solve for x
    x = 2,445,220,160.70/56,726.28
  6. Step 6: Final answer
    x = 43,105.60

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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.