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Finding the Fourth Proportional to 63,291.02, 87,311.87 and 45,145.76

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Solution

The fourth proportional to 63,291.02, 87,311.87 and 45,145.76 is: 62,279.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,291.02 : 87,311.87 = 45,145.76 : x
  2. Step 2: Convert to fraction form
    63,291.02/87,311.87 = 45,145.76/x
  3. Step 3: Cross multiply
    63,291.02x = 87,311.87 × 45,145.76
  4. Step 4: Simplify right side
    63,291.02x = 3,941,760,489.12
  5. Step 5: Solve for x
    x = 3,941,760,489.12/63,291.02
  6. Step 6: Final answer
    x = 62,279.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.