Home / 38,470.20-57,705.30-31,903.80

Finding the Fourth Proportional to 38,470.20, 57,705.30 and 31,903.80

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Solution

The fourth proportional to 38,470.20, 57,705.30 and 31,903.80 is: 47,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,470.20 : 57,705.30 = 31,903.80 : x
  2. Step 2: Convert to fraction form
    38,470.20/57,705.30 = 31,903.80/x
  3. Step 3: Cross multiply
    38,470.20x = 57,705.30 × 31,903.80
  4. Step 4: Simplify right side
    38,470.20x = 1,841,018,350.14
  5. Step 5: Solve for x
    x = 1,841,018,350.14/38,470.20
  6. Step 6: Final answer
    x = 47,855.70

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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.