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Finding the Fourth Proportional to 86,550.30, 129,825.45 and 39,894.30

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Solution

The fourth proportional to 86,550.30, 129,825.45 and 39,894.30 is: 59,841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,550.30 : 129,825.45 = 39,894.30 : x
  2. Step 2: Convert to fraction form
    86,550.30/129,825.45 = 39,894.30/x
  3. Step 3: Cross multiply
    86,550.30x = 129,825.45 × 39,894.30
  4. Step 4: Simplify right side
    86,550.30x = 5,179,295,449.94
  5. Step 5: Solve for x
    x = 5,179,295,449.94/86,550.30
  6. Step 6: Final answer
    x = 59,841.45

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Similar ratio
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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.