Home / 78,805.05-108,750.60-42,994.95

Finding the Fourth Proportional to 78,805.05, 108,750.60 and 42,994.95

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Solution

The fourth proportional to 78,805.05, 108,750.60 and 42,994.95 is: 59,332.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,805.05 : 108,750.60 = 42,994.95 : x
  2. Step 2: Convert to fraction form
    78,805.05/108,750.60 = 42,994.95/x
  3. Step 3: Cross multiply
    78,805.05x = 108,750.60 × 42,994.95
  4. Step 4: Simplify right side
    78,805.05x = 4,675,726,609.47
  5. Step 5: Solve for x
    x = 4,675,726,609.47/78,805.05
  6. Step 6: Final answer
    x = 59,332.83

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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.