Home / 78,436.18-108,241.80-42,626.11

Finding the Fourth Proportional to 78,436.18, 108,241.80 and 42,626.11

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Solution

The fourth proportional to 78,436.18, 108,241.80 and 42,626.11 is: 58,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,436.18 : 108,241.80 = 42,626.11 : x
  2. Step 2: Convert to fraction form
    78,436.18/108,241.80 = 42,626.11/x
  3. Step 3: Cross multiply
    78,436.18x = 108,241.80 × 42,626.11
  4. Step 4: Simplify right side
    78,436.18x = 4,613,926,873.40
  5. Step 5: Solve for x
    x = 4,613,926,873.40/78,436.18
  6. Step 6: Final answer
    x = 58,823.96

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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.