Home / 56,799.78-78,387.12-31,306.11

Finding the Fourth Proportional to 56,799.78, 78,387.12 and 31,306.11

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Solution

The fourth proportional to 56,799.78, 78,387.12 and 31,306.11 is: 43,204.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,799.78 : 78,387.12 = 31,306.11 : x
  2. Step 2: Convert to fraction form
    56,799.78/78,387.12 = 31,306.11/x
  3. Step 3: Cross multiply
    56,799.78x = 78,387.12 × 31,306.11
  4. Step 4: Simplify right side
    56,799.78x = 2,453,995,801.30
  5. Step 5: Solve for x
    x = 2,453,995,801.30/56,799.78
  6. Step 6: Final answer
    x = 43,204.32

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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.