Home / 81,943.12-113,055.24-48,402.64

Finding the Fourth Proportional to 81,943.12, 113,055.24 and 48,402.64

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Solution

The fourth proportional to 81,943.12, 113,055.24 and 48,402.64 is: 66,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,943.12 : 113,055.24 = 48,402.64 : x
  2. Step 2: Convert to fraction form
    81,943.12/113,055.24 = 48,402.64/x
  3. Step 3: Cross multiply
    81,943.12x = 113,055.24 × 48,402.64
  4. Step 4: Simplify right side
    81,943.12x = 5,472,172,081.83
  5. Step 5: Solve for x
    x = 5,472,172,081.83/81,943.12
  6. Step 6: Final answer
    x = 66,780.13

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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.