Home / 78,563.76-108,419.04-42,754.56

Finding the Fourth Proportional to 78,563.76, 108,419.04 and 42,754.56

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Solution

The fourth proportional to 78,563.76, 108,419.04 and 42,754.56 is: 59,001.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.76 : 108,419.04 = 42,754.56 : x
  2. Step 2: Convert to fraction form
    78,563.76/108,419.04 = 42,754.56/x
  3. Step 3: Cross multiply
    78,563.76x = 108,419.04 × 42,754.56
  4. Step 4: Simplify right side
    78,563.76x = 4,635,408,350.82
  5. Step 5: Solve for x
    x = 4,635,408,350.82/78,563.76
  6. Step 6: Final answer
    x = 59,001.86

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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.