Home / 73,140.35-109,700.80-28,755.18

Finding the Fourth Proportional to 73,140.35, 109,700.80 and 28,755.18

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Solution

The fourth proportional to 73,140.35, 109,700.80 and 28,755.18 is: 43,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,140.35 : 109,700.80 = 28,755.18 : x
  2. Step 2: Convert to fraction form
    73,140.35/109,700.80 = 28,755.18/x
  3. Step 3: Cross multiply
    73,140.35x = 109,700.80 × 28,755.18
  4. Step 4: Simplify right side
    73,140.35x = 3,154,466,178.26
  5. Step 5: Solve for x
    x = 3,154,466,178.26/73,140.35
  6. Step 6: Final answer
    x = 43,128.95

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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.