Home / 78,888.09-108,864.48-43,079.61

Finding the Fourth Proportional to 78,888.09, 108,864.48 and 43,079.61

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Solution

The fourth proportional to 78,888.09, 108,864.48 and 43,079.61 is: 59,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,888.09 : 108,864.48 = 43,079.61 : x
  2. Step 2: Convert to fraction form
    78,888.09/108,864.48 = 43,079.61/x
  3. Step 3: Cross multiply
    78,888.09x = 108,864.48 × 43,079.61
  4. Step 4: Simplify right side
    78,888.09x = 4,689,839,341.25
  5. Step 5: Solve for x
    x = 4,689,839,341.25/78,888.09
  6. Step 6: Final answer
    x = 59,449.27

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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.