Home / 78,062.15-117,101.14-21,902.42

Finding the Fourth Proportional to 78,062.15, 117,101.14 and 21,902.42

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Solution

The fourth proportional to 78,062.15, 117,101.14 and 21,902.42 is: 32,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,062.15 : 117,101.14 = 21,902.42 : x
  2. Step 2: Convert to fraction form
    78,062.15/117,101.14 = 21,902.42/x
  3. Step 3: Cross multiply
    78,062.15x = 117,101.14 × 21,902.42
  4. Step 4: Simplify right side
    78,062.15x = 2,564,798,588.76
  5. Step 5: Solve for x
    x = 2,564,798,588.76/78,062.15
  6. Step 6: Final answer
    x = 32,855.85

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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.