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Finding the Fourth Proportional to 57,758.62, 86,641.02 and 18,318.88

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Solution

The fourth proportional to 57,758.62, 86,641.02 and 18,318.88 is: 27,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,758.62 : 86,641.02 = 18,318.88 : x
  2. Step 2: Convert to fraction form
    57,758.62/86,641.02 = 18,318.88/x
  3. Step 3: Cross multiply
    57,758.62x = 86,641.02 × 18,318.88
  4. Step 4: Simplify right side
    57,758.62x = 1,587,166,448.46
  5. Step 5: Solve for x
    x = 1,587,166,448.46/57,758.62
  6. Step 6: Final answer
    x = 27,479.30

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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.