Home / 38,538.80-57,743.40-31,929.20

Finding the Fourth Proportional to 38,538.80, 57,743.40 and 31,929.20

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Solution

The fourth proportional to 38,538.80, 57,743.40 and 31,929.20 is: 47,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,538.80 : 57,743.40 = 31,929.20 : x
  2. Step 2: Convert to fraction form
    38,538.80/57,743.40 = 31,929.20/x
  3. Step 3: Cross multiply
    38,538.80x = 57,743.40 × 31,929.20
  4. Step 4: Simplify right side
    38,538.80x = 1,843,700,567.28
  5. Step 5: Solve for x
    x = 1,843,700,567.28/38,538.80
  6. Step 6: Final answer
    x = 47,840.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.