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Finding the Fourth Proportional to 85,805.80, 128,795.10 and 41,468.20

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Solution

The fourth proportional to 85,805.80, 128,795.10 and 41,468.20 is: 62,244.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,805.80 : 128,795.10 = 41,468.20 : x
  2. Step 2: Convert to fraction form
    85,805.80/128,795.10 = 41,468.20/x
  3. Step 3: Cross multiply
    85,805.80x = 128,795.10 × 41,468.20
  4. Step 4: Simplify right side
    85,805.80x = 5,340,900,965.82
  5. Step 5: Solve for x
    x = 5,340,900,965.82/85,805.80
  6. Step 6: Final answer
    x = 62,244.06

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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.