Home / 78,209.17-117,343.07-36,109.42

Finding the Fourth Proportional to 78,209.17, 117,343.07 and 36,109.42

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Solution

The fourth proportional to 78,209.17, 117,343.07 and 36,109.42 is: 54,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,209.17 : 117,343.07 = 36,109.42 : x
  2. Step 2: Convert to fraction form
    78,209.17/117,343.07 = 36,109.42/x
  3. Step 3: Cross multiply
    78,209.17x = 117,343.07 × 36,109.42
  4. Step 4: Simplify right side
    78,209.17x = 4,237,189,724.81
  5. Step 5: Solve for x
    x = 4,237,189,724.81/78,209.17
  6. Step 6: Final answer
    x = 54,177.66

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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.