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Finding the Fourth Proportional to 86,057.30, 128,899.02 and 41,590.80

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Solution

The fourth proportional to 86,057.30, 128,899.02 and 41,590.80 is: 62,295.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,057.30 : 128,899.02 = 41,590.80 : x
  2. Step 2: Convert to fraction form
    86,057.30/128,899.02 = 41,590.80/x
  3. Step 3: Cross multiply
    86,057.30x = 128,899.02 × 41,590.80
  4. Step 4: Simplify right side
    86,057.30x = 5,361,012,830.81
  5. Step 5: Solve for x
    x = 5,361,012,830.81/86,057.30
  6. Step 6: Final answer
    x = 62,295.85

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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.