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Finding the Fourth Proportional to 38,687.40, 58,031.10 and 36,743.40

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Solution

The fourth proportional to 38,687.40, 58,031.10 and 36,743.40 is: 55,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,687.40 : 58,031.10 = 36,743.40 : x
  2. Step 2: Convert to fraction form
    38,687.40/58,031.10 = 36,743.40/x
  3. Step 3: Cross multiply
    38,687.40x = 58,031.10 × 36,743.40
  4. Step 4: Simplify right side
    38,687.40x = 2,132,259,919.74
  5. Step 5: Solve for x
    x = 2,132,259,919.74/38,687.40
  6. Step 6: Final answer
    x = 55,115.10

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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.