Home / 78,204.20-117,306.54-19,039.88

Finding the Fourth Proportional to 78,204.20, 117,306.54 and 19,039.88

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Solution

The fourth proportional to 78,204.20, 117,306.54 and 19,039.88 is: 28,559.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,204.20 : 117,306.54 = 19,039.88 : x
  2. Step 2: Convert to fraction form
    78,204.20/117,306.54 = 19,039.88/x
  3. Step 3: Cross multiply
    78,204.20x = 117,306.54 × 19,039.88
  4. Step 4: Simplify right side
    78,204.20x = 2,233,502,444.82
  5. Step 5: Solve for x
    x = 2,233,502,444.82/78,204.20
  6. Step 6: Final answer
    x = 28,559.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.