Home / 71,857.65-99,171.38-39,595.61

Finding the Fourth Proportional to 71,857.65, 99,171.38 and 39,595.61

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Solution

The fourth proportional to 71,857.65, 99,171.38 and 39,595.61 is: 54,646.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,857.65 : 99,171.38 = 39,595.61 : x
  2. Step 2: Convert to fraction form
    71,857.65/99,171.38 = 39,595.61/x
  3. Step 3: Cross multiply
    71,857.65x = 99,171.38 × 39,595.61
  4. Step 4: Simplify right side
    71,857.65x = 3,926,750,591.81
  5. Step 5: Solve for x
    x = 3,926,750,591.81/71,857.65
  6. Step 6: Final answer
    x = 54,646.24

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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.