Home / 78,286.01-117,427.65-54,248.15

Finding the Fourth Proportional to 78,286.01, 117,427.65 and 54,248.15

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Solution

The fourth proportional to 78,286.01, 117,427.65 and 54,248.15 is: 81,371.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286.01 : 117,427.65 = 54,248.15 : x
  2. Step 2: Convert to fraction form
    78,286.01/117,427.65 = 54,248.15/x
  3. Step 3: Cross multiply
    78,286.01x = 117,427.65 × 54,248.15
  4. Step 4: Simplify right side
    78,286.01x = 6,370,232,353.53
  5. Step 5: Solve for x
    x = 6,370,232,353.53/78,286.01
  6. Step 6: Final answer
    x = 81,371.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.