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Finding the Fourth Proportional to 57,882.16, 86,816.72 and 39,281.68

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Solution

The fourth proportional to 57,882.16, 86,816.72 and 39,281.68 is: 58,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,882.16 : 86,816.72 = 39,281.68 : x
  2. Step 2: Convert to fraction form
    57,882.16/86,816.72 = 39,281.68/x
  3. Step 3: Cross multiply
    57,882.16x = 86,816.72 × 39,281.68
  4. Step 4: Simplify right side
    57,882.16x = 3,410,306,613.69
  5. Step 5: Solve for x
    x = 3,410,306,613.69/57,882.16
  6. Step 6: Final answer
    x = 58,918.10

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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.