Home / 78,512.40-117,729.18-36,356.22

Finding the Fourth Proportional to 78,512.40, 117,729.18 and 36,356.22

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Solution

The fourth proportional to 78,512.40, 117,729.18 and 36,356.22 is: 54,516.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,512.40 : 117,729.18 = 36,356.22 : x
  2. Step 2: Convert to fraction form
    78,512.40/117,729.18 = 36,356.22/x
  3. Step 3: Cross multiply
    78,512.40x = 117,729.18 × 36,356.22
  4. Step 4: Simplify right side
    78,512.40x = 4,280,187,968.50
  5. Step 5: Solve for x
    x = 4,280,187,968.50/78,512.40
  6. Step 6: Final answer
    x = 54,516.08

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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.