Home / 81,581.08-112,372.13-57,666.64

Finding the Fourth Proportional to 81,581.08, 112,372.13 and 57,666.64

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Solution

The fourth proportional to 81,581.08, 112,372.13 and 57,666.64 is: 79,431.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.08 : 112,372.13 = 57,666.64 : x
  2. Step 2: Convert to fraction form
    81,581.08/112,372.13 = 57,666.64/x
  3. Step 3: Cross multiply
    81,581.08x = 112,372.13 × 57,666.64
  4. Step 4: Simplify right side
    81,581.08x = 6,480,123,166.74
  5. Step 5: Solve for x
    x = 6,480,123,166.74/81,581.08
  6. Step 6: Final answer
    x = 79,431.69

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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.