Home / 78,339.18-117,496.60-25,748.30

Finding the Fourth Proportional to 78,339.18, 117,496.60 and 25,748.30

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Solution

The fourth proportional to 78,339.18, 117,496.60 and 25,748.30 is: 38,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,339.18 : 117,496.60 = 25,748.30 : x
  2. Step 2: Convert to fraction form
    78,339.18/117,496.60 = 25,748.30/x
  3. Step 3: Cross multiply
    78,339.18x = 117,496.60 × 25,748.30
  4. Step 4: Simplify right side
    78,339.18x = 3,025,337,705.78
  5. Step 5: Solve for x
    x = 3,025,337,705.78/78,339.18
  6. Step 6: Final answer
    x = 38,618.45

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1.5x scale

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.