Home / 81,437.20-112,437.48-62,540.56

Finding the Fourth Proportional to 81,437.20, 112,437.48 and 62,540.56

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Solution

The fourth proportional to 81,437.20, 112,437.48 and 62,540.56 is: 86,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,437.20 : 112,437.48 = 62,540.56 : x
  2. Step 2: Convert to fraction form
    81,437.20/112,437.48 = 62,540.56/x
  3. Step 3: Cross multiply
    81,437.20x = 112,437.48 × 62,540.56
  4. Step 4: Simplify right side
    81,437.20x = 7,031,902,964.19
  5. Step 5: Solve for x
    x = 7,031,902,964.19/81,437.20
  6. Step 6: Final answer
    x = 86,347.55

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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.