Home / 78,837.45-108,886.19-57,422.61

Finding the Fourth Proportional to 78,837.45, 108,886.19 and 57,422.61

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Solution

The fourth proportional to 78,837.45, 108,886.19 and 57,422.61 is: 79,309.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,837.45 : 108,886.19 = 57,422.61 : x
  2. Step 2: Convert to fraction form
    78,837.45/108,886.19 = 57,422.61/x
  3. Step 3: Cross multiply
    78,837.45x = 108,886.19 × 57,422.61
  4. Step 4: Simplify right side
    78,837.45x = 6,252,528,935.64
  5. Step 5: Solve for x
    x = 6,252,528,935.64/78,837.45
  6. Step 6: Final answer
    x = 79,309.12

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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.