Home / 85,997.10-129,045.42-36,072.72

Finding the Fourth Proportional to 85,997.10, 129,045.42 and 36,072.72

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Solution

The fourth proportional to 85,997.10, 129,045.42 and 36,072.72 is: 54,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,997.10 : 129,045.42 = 36,072.72 : x
  2. Step 2: Convert to fraction form
    85,997.10/129,045.42 = 36,072.72/x
  3. Step 3: Cross multiply
    85,997.10x = 129,045.42 × 36,072.72
  4. Step 4: Simplify right side
    85,997.10x = 4,655,019,302.94
  5. Step 5: Solve for x
    x = 4,655,019,302.94/85,997.10
  6. Step 6: Final answer
    x = 54,129.96

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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.