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Finding the Fourth Proportional to 74,955.20, 112,432.80 and 52,836.80

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Solution

The fourth proportional to 74,955.20, 112,432.80 and 52,836.80 is: 79,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,955.20 : 112,432.80 = 52,836.80 : x
  2. Step 2: Convert to fraction form
    74,955.20/112,432.80 = 52,836.80/x
  3. Step 3: Cross multiply
    74,955.20x = 112,432.80 × 52,836.80
  4. Step 4: Simplify right side
    74,955.20x = 5,940,589,367.04
  5. Step 5: Solve for x
    x = 5,940,589,367.04/74,955.20
  6. Step 6: Final answer
    x = 79,255.20

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1.5x scale

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.