Home / 56,726.20-78,279-31,231.52

Finding the Fourth Proportional to 56,726.20, 78,279 and 31,231.52

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Solution

The fourth proportional to 56,726.20, 78,279 and 31,231.52 is: 43,097.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,726.20 : 78,279 = 31,231.52 : x
  2. Step 2: Convert to fraction form
    56,726.20/78,279 = 31,231.52/x
  3. Step 3: Cross multiply
    56,726.20x = 78,279 × 31,231.52
  4. Step 4: Simplify right side
    56,726.20x = 2,444,772,154.08
  5. Step 5: Solve for x
    x = 2,444,772,154.08/56,726.20
  6. Step 6: Final answer
    x = 43,097.76

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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.