Home / 78,805.45-108,751.88-42,996.20

Finding the Fourth Proportional to 78,805.45, 108,751.88 and 42,996.20

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Solution

The fourth proportional to 78,805.45, 108,751.88 and 42,996.20 is: 59,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,805.45 : 108,751.88 = 42,996.20 : x
  2. Step 2: Convert to fraction form
    78,805.45/108,751.88 = 42,996.20/x
  3. Step 3: Cross multiply
    78,805.45x = 108,751.88 × 42,996.20
  4. Step 4: Simplify right side
    78,805.45x = 4,675,917,367.88
  5. Step 5: Solve for x
    x = 4,675,917,367.88/78,805.45
  6. Step 6: Final answer
    x = 59,334.95

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1.5x scale

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.