Home / 78,293.16-117,451.98-25,690.68

Finding the Fourth Proportional to 78,293.16, 117,451.98 and 25,690.68

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Solution

The fourth proportional to 78,293.16, 117,451.98 and 25,690.68 is: 38,540.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,293.16 : 117,451.98 = 25,690.68 : x
  2. Step 2: Convert to fraction form
    78,293.16/117,451.98 = 25,690.68/x
  3. Step 3: Cross multiply
    78,293.16x = 117,451.98 × 25,690.68
  4. Step 4: Simplify right side
    78,293.16x = 3,017,421,233.55
  5. Step 5: Solve for x
    x = 3,017,421,233.55/78,293.16
  6. Step 6: Final answer
    x = 38,540.04

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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.