Home / 45,101.31-67,632.92-13,515.87

Finding the Fourth Proportional to 45,101.31, 67,632.92 and 13,515.87

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Solution

The fourth proportional to 45,101.31, 67,632.92 and 13,515.87 is: 20,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,101.31 : 67,632.92 = 13,515.87 : x
  2. Step 2: Convert to fraction form
    45,101.31/67,632.92 = 13,515.87/x
  3. Step 3: Cross multiply
    45,101.31x = 67,632.92 × 13,515.87
  4. Step 4: Simplify right side
    45,101.31x = 914,117,686.86
  5. Step 5: Solve for x
    x = 914,117,686.86/45,101.31
  6. Step 6: Final answer
    x = 20,268.10

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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.