Home / 81,688.24-112,732.50-45,884.56

Finding the Fourth Proportional to 81,688.24, 112,732.50 and 45,884.56

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Solution

The fourth proportional to 81,688.24, 112,732.50 and 45,884.56 is: 63,322.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688.24 : 112,732.50 = 45,884.56 : x
  2. Step 2: Convert to fraction form
    81,688.24/112,732.50 = 45,884.56/x
  3. Step 3: Cross multiply
    81,688.24x = 112,732.50 × 45,884.56
  4. Step 4: Simplify right side
    81,688.24x = 5,172,681,160.20
  5. Step 5: Solve for x
    x = 5,172,681,160.20/81,688.24
  6. Step 6: Final answer
    x = 63,322.23

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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.