Home / 78,909.36-108,897.28-43,101.28

Finding the Fourth Proportional to 78,909.36, 108,897.28 and 43,101.28

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Solution

The fourth proportional to 78,909.36, 108,897.28 and 43,101.28 is: 59,481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,909.36 : 108,897.28 = 43,101.28 : x
  2. Step 2: Convert to fraction form
    78,909.36/108,897.28 = 43,101.28/x
  3. Step 3: Cross multiply
    78,909.36x = 108,897.28 × 43,101.28
  4. Step 4: Simplify right side
    78,909.36x = 4,693,612,156.52
  5. Step 5: Solve for x
    x = 4,693,612,156.52/78,909.36
  6. Step 6: Final answer
    x = 59,481.06

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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.