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Finding the Fourth Proportional to 38,812.80, 58,132.80 and 37,948.80

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Solution

The fourth proportional to 38,812.80, 58,132.80 and 37,948.80 is: 56,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,812.80 : 58,132.80 = 37,948.80 : x
  2. Step 2: Convert to fraction form
    38,812.80/58,132.80 = 37,948.80/x
  3. Step 3: Cross multiply
    38,812.80x = 58,132.80 × 37,948.80
  4. Step 4: Simplify right side
    38,812.80x = 2,206,070,000.64
  5. Step 5: Solve for x
    x = 2,206,070,000.64/38,812.80
  6. Step 6: Final answer
    x = 56,838.72

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1.5x scale

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.