Home / 78,330.26-117,520.64-36,237.91

Finding the Fourth Proportional to 78,330.26, 117,520.64 and 36,237.91

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Solution

The fourth proportional to 78,330.26, 117,520.64 and 36,237.91 is: 54,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.26 : 117,520.64 = 36,237.91 : x
  2. Step 2: Convert to fraction form
    78,330.26/117,520.64 = 36,237.91/x
  3. Step 3: Cross multiply
    78,330.26x = 117,520.64 × 36,237.91
  4. Step 4: Simplify right side
    78,330.26x = 4,258,702,375.46
  5. Step 5: Solve for x
    x = 4,258,702,375.46/78,330.26
  6. Step 6: Final answer
    x = 54,368.55

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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.