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Finding the Fourth Proportional to 41,643.60, 62,479.80 and 40,203.60

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Solution

The fourth proportional to 41,643.60, 62,479.80 and 40,203.60 is: 60,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,643.60 : 62,479.80 = 40,203.60 : x
  2. Step 2: Convert to fraction form
    41,643.60/62,479.80 = 40,203.60/x
  3. Step 3: Cross multiply
    41,643.60x = 62,479.80 × 40,203.60
  4. Step 4: Simplify right side
    41,643.60x = 2,511,912,887.28
  5. Step 5: Solve for x
    x = 2,511,912,887.28/41,643.60
  6. Step 6: Final answer
    x = 60,319.30

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1.5x scale

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.