Home / 38,140.72-57,469.18-31,710.40

Finding the Fourth Proportional to 38,140.72, 57,469.18 and 31,710.40

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Solution

The fourth proportional to 38,140.72, 57,469.18 and 31,710.40 is: 47,780.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,140.72 : 57,469.18 = 31,710.40 : x
  2. Step 2: Convert to fraction form
    38,140.72/57,469.18 = 31,710.40/x
  3. Step 3: Cross multiply
    38,140.72x = 57,469.18 × 31,710.40
  4. Step 4: Simplify right side
    38,140.72x = 1,822,370,685.47
  5. Step 5: Solve for x
    x = 1,822,370,685.47/38,140.72
  6. Step 6: Final answer
    x = 47,780.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.