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Finding the Fourth Proportional to 86,057.42, 128,899.20 and 41,590.92

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Solution

The fourth proportional to 86,057.42, 128,899.20 and 41,590.92 is: 62,296.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,057.42 : 128,899.20 = 41,590.92 : x
  2. Step 2: Convert to fraction form
    86,057.42/128,899.20 = 41,590.92/x
  3. Step 3: Cross multiply
    86,057.42x = 128,899.20 × 41,590.92
  4. Step 4: Simplify right side
    86,057.42x = 5,361,036,315.26
  5. Step 5: Solve for x
    x = 5,361,036,315.26/86,057.42
  6. Step 6: Final answer
    x = 62,296.04

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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.