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Finding the Fourth Proportional to 40,641.90, 60,844.05 and 28,977.90

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Solution

The fourth proportional to 40,641.90, 60,844.05 and 28,977.90 is: 43,382.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,641.90 : 60,844.05 = 28,977.90 : x
  2. Step 2: Convert to fraction form
    40,641.90/60,844.05 = 28,977.90/x
  3. Step 3: Cross multiply
    40,641.90x = 60,844.05 × 28,977.90
  4. Step 4: Simplify right side
    40,641.90x = 1,763,132,796.50
  5. Step 5: Solve for x
    x = 1,763,132,796.50/40,641.90
  6. Step 6: Final answer
    x = 43,382.14

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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.