Home / 78,436.60-117,667.08-25,829.56

Finding the Fourth Proportional to 78,436.60, 117,667.08 and 25,829.56

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Solution

The fourth proportional to 78,436.60, 117,667.08 and 25,829.56 is: 38,748.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,436.60 : 117,667.08 = 25,829.56 : x
  2. Step 2: Convert to fraction form
    78,436.60/117,667.08 = 25,829.56/x
  3. Step 3: Cross multiply
    78,436.60x = 117,667.08 × 25,829.56
  4. Step 4: Simplify right side
    78,436.60x = 3,039,288,902.88
  5. Step 5: Solve for x
    x = 3,039,288,902.88/78,436.60
  6. Step 6: Final answer
    x = 38,748.35

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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.