Home / 78,328.26-117,517.64-36,235.91

Finding the Fourth Proportional to 78,328.26, 117,517.64 and 36,235.91

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Solution

The fourth proportional to 78,328.26, 117,517.64 and 36,235.91 is: 54,365.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,328.26 : 117,517.64 = 36,235.91 : x
  2. Step 2: Convert to fraction form
    78,328.26/117,517.64 = 36,235.91/x
  3. Step 3: Cross multiply
    78,328.26x = 117,517.64 × 36,235.91
  4. Step 4: Simplify right side
    78,328.26x = 4,258,358,423.25
  5. Step 5: Solve for x
    x = 4,258,358,423.25/78,328.26
  6. Step 6: Final answer
    x = 54,365.55

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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.