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Finding the Fourth Proportional to 86,017.68, 129,016.80 and 29,847.96

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Solution

The fourth proportional to 86,017.68, 129,016.80 and 29,847.96 is: 44,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,017.68 : 129,016.80 = 29,847.96 : x
  2. Step 2: Convert to fraction form
    86,017.68/129,016.80 = 29,847.96/x
  3. Step 3: Cross multiply
    86,017.68x = 129,016.80 × 29,847.96
  4. Step 4: Simplify right side
    86,017.68x = 3,850,888,285.73
  5. Step 5: Solve for x
    x = 3,850,888,285.73/86,017.68
  6. Step 6: Final answer
    x = 44,768.57

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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.