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Finding the Fourth Proportional to 40,643.55, 60,910.65 and 28,943.10

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Solution

The fourth proportional to 40,643.55, 60,910.65 and 28,943.10 is: 43,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,643.55 : 60,910.65 = 28,943.10 : x
  2. Step 2: Convert to fraction form
    40,643.55/60,910.65 = 28,943.10/x
  3. Step 3: Cross multiply
    40,643.55x = 60,910.65 × 28,943.10
  4. Step 4: Simplify right side
    40,643.55x = 1,762,943,034.02
  5. Step 5: Solve for x
    x = 1,762,943,034.02/40,643.55
  6. Step 6: Final answer
    x = 43,375.71

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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.