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Finding the Fourth Proportional to 78,433.68, 117,554.13 and 36,256.71

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Solution

The fourth proportional to 78,433.68, 117,554.13 and 36,256.71 is: 54,340.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,433.68 : 117,554.13 = 36,256.71 : x
  2. Step 2: Convert to fraction form
    78,433.68/117,554.13 = 36,256.71/x
  3. Step 3: Cross multiply
    78,433.68x = 117,554.13 × 36,256.71
  4. Step 4: Simplify right side
    78,433.68x = 4,262,126,000.71
  5. Step 5: Solve for x
    x = 4,262,126,000.71/78,433.68
  6. Step 6: Final answer
    x = 54,340.51

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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.