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Finding the Fourth Proportional to 69,165.76, 103,760.88 and 42,900.16

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Solution

The fourth proportional to 69,165.76, 103,760.88 and 42,900.16 is: 64,357.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,165.76 : 103,760.88 = 42,900.16 : x
  2. Step 2: Convert to fraction form
    69,165.76/103,760.88 = 42,900.16/x
  3. Step 3: Cross multiply
    69,165.76x = 103,760.88 × 42,900.16
  4. Step 4: Simplify right side
    69,165.76x = 4,451,358,353.74
  5. Step 5: Solve for x
    x = 4,451,358,353.74/69,165.76
  6. Step 6: Final answer
    x = 64,357.83

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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.