Home / 56,920.77-78,553.29-31,430.73

Finding the Fourth Proportional to 56,920.77, 78,553.29 and 31,430.73

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Solution

The fourth proportional to 56,920.77, 78,553.29 and 31,430.73 is: 43,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,920.77 : 78,553.29 = 31,430.73 : x
  2. Step 2: Convert to fraction form
    56,920.77/78,553.29 = 31,430.73/x
  3. Step 3: Cross multiply
    56,920.77x = 78,553.29 × 31,430.73
  4. Step 4: Simplify right side
    56,920.77x = 2,468,987,248.60
  5. Step 5: Solve for x
    x = 2,468,987,248.60/56,920.77
  6. Step 6: Final answer
    x = 43,375.86

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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.