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Finding the Fourth Proportional to 86,295.77, 129,458.42 and 39,552.65

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Solution

The fourth proportional to 86,295.77, 129,458.42 and 39,552.65 is: 59,335.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,295.77 : 129,458.42 = 39,552.65 : x
  2. Step 2: Convert to fraction form
    86,295.77/129,458.42 = 39,552.65/x
  3. Step 3: Cross multiply
    86,295.77x = 129,458.42 × 39,552.65
  4. Step 4: Simplify right side
    86,295.77x = 5,120,423,378.05
  5. Step 5: Solve for x
    x = 5,120,423,378.05/86,295.77
  6. Step 6: Final answer
    x = 59,335.74

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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.