Home / 49,781.40-74,672.10-18,612.60

Finding the Fourth Proportional to 49,781.40, 74,672.10 and 18,612.60

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Solution

The fourth proportional to 49,781.40, 74,672.10 and 18,612.60 is: 27,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,781.40 : 74,672.10 = 18,612.60 : x
  2. Step 2: Convert to fraction form
    49,781.40/74,672.10 = 18,612.60/x
  3. Step 3: Cross multiply
    49,781.40x = 74,672.10 × 18,612.60
  4. Step 4: Simplify right side
    49,781.40x = 1,389,841,928.46
  5. Step 5: Solve for x
    x = 1,389,841,928.46/49,781.40
  6. Step 6: Final answer
    x = 27,918.90

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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.