Home / 52,531.20-78,991.20-43,977.60

Finding the Fourth Proportional to 52,531.20, 78,991.20 and 43,977.60

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Solution

The fourth proportional to 52,531.20, 78,991.20 and 43,977.60 is: 66,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,531.20 : 78,991.20 = 43,977.60 : x
  2. Step 2: Convert to fraction form
    52,531.20/78,991.20 = 43,977.60/x
  3. Step 3: Cross multiply
    52,531.20x = 78,991.20 × 43,977.60
  4. Step 4: Simplify right side
    52,531.20x = 3,473,843,397.12
  5. Step 5: Solve for x
    x = 3,473,843,397.12/52,531.20
  6. Step 6: Final answer
    x = 66,129.15

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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.