Home / 87,817.95-131,740.74-28,639.89

Finding the Fourth Proportional to 87,817.95, 131,740.74 and 28,639.89

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Solution

The fourth proportional to 87,817.95, 131,740.74 and 28,639.89 is: 42,964.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,817.95 : 131,740.74 = 28,639.89 : x
  2. Step 2: Convert to fraction form
    87,817.95/131,740.74 = 28,639.89/x
  3. Step 3: Cross multiply
    87,817.95x = 131,740.74 × 28,639.89
  4. Step 4: Simplify right side
    87,817.95x = 3,773,040,302.12
  5. Step 5: Solve for x
    x = 3,773,040,302.12/87,817.95
  6. Step 6: Final answer
    x = 42,964.34

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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.