Home / 78,886.06-108,867.19-43,079.40

Finding the Fourth Proportional to 78,886.06, 108,867.19 and 43,079.40

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Solution

The fourth proportional to 78,886.06, 108,867.19 and 43,079.40 is: 59,451.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,886.06 : 108,867.19 = 43,079.40 : x
  2. Step 2: Convert to fraction form
    78,886.06/108,867.19 = 43,079.40/x
  3. Step 3: Cross multiply
    78,886.06x = 108,867.19 × 43,079.40
  4. Step 4: Simplify right side
    78,886.06x = 4,689,933,224.89
  5. Step 5: Solve for x
    x = 4,689,933,224.89/78,886.06
  6. Step 6: Final answer
    x = 59,451.99

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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.