Home / 56,292.24-77,680.08-31,140

Finding the Fourth Proportional to 56,292.24, 77,680.08 and 31,140

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Solution

The fourth proportional to 56,292.24, 77,680.08 and 31,140 is: 42,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,292.24 : 77,680.08 = 31,140 : x
  2. Step 2: Convert to fraction form
    56,292.24/77,680.08 = 31,140/x
  3. Step 3: Cross multiply
    56,292.24x = 77,680.08 × 31,140
  4. Step 4: Simplify right side
    56,292.24x = 2,418,957,691.20
  5. Step 5: Solve for x
    x = 2,418,957,691.20/56,292.24
  6. Step 6: Final answer
    x = 42,971.42

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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.