Home / 78,621.26-108,494.07-42,811.18

Finding the Fourth Proportional to 78,621.26, 108,494.07 and 42,811.18

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Solution

The fourth proportional to 78,621.26, 108,494.07 and 42,811.18 is: 59,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621.26 : 108,494.07 = 42,811.18 : x
  2. Step 2: Convert to fraction form
    78,621.26/108,494.07 = 42,811.18/x
  3. Step 3: Cross multiply
    78,621.26x = 108,494.07 × 42,811.18
  4. Step 4: Simplify right side
    78,621.26x = 4,644,759,266.73
  5. Step 5: Solve for x
    x = 4,644,759,266.73/78,621.26
  6. Step 6: Final answer
    x = 59,077.65

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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.