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Finding the Fourth Proportional to 86,486.56, 129,743.71 and 36,567.18

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Solution

The fourth proportional to 86,486.56, 129,743.71 and 36,567.18 is: 54,856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,486.56 : 129,743.71 = 36,567.18 : x
  2. Step 2: Convert to fraction form
    86,486.56/129,743.71 = 36,567.18/x
  3. Step 3: Cross multiply
    86,486.56x = 129,743.71 × 36,567.18
  4. Step 4: Simplify right side
    86,486.56x = 4,744,361,506.02
  5. Step 5: Solve for x
    x = 4,744,361,506.02/86,486.56
  6. Step 6: Final answer
    x = 54,856.63

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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.