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Finding the Fourth Proportional to 74,116.60, 111,247.80 and 36,718.90

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Solution

The fourth proportional to 74,116.60, 111,247.80 and 36,718.90 is: 55,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,116.60 : 111,247.80 = 36,718.90 : x
  2. Step 2: Convert to fraction form
    74,116.60/111,247.80 = 36,718.90/x
  3. Step 3: Cross multiply
    74,116.60x = 111,247.80 × 36,718.90
  4. Step 4: Simplify right side
    74,116.60x = 4,084,896,843.42
  5. Step 5: Solve for x
    x = 4,084,896,843.42/74,116.60
  6. Step 6: Final answer
    x = 55,114.47

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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.