Home / 85,991.08-129,036.42-36,066.72

Finding the Fourth Proportional to 85,991.08, 129,036.42 and 36,066.72

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Solution

The fourth proportional to 85,991.08, 129,036.42 and 36,066.72 is: 54,120.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,991.08 : 129,036.42 = 36,066.72 : x
  2. Step 2: Convert to fraction form
    85,991.08/129,036.42 = 36,066.72/x
  3. Step 3: Cross multiply
    85,991.08x = 129,036.42 × 36,066.72
  4. Step 4: Simplify right side
    85,991.08x = 4,653,920,429.94
  5. Step 5: Solve for x
    x = 4,653,920,429.94/85,991.08
  6. Step 6: Final answer
    x = 54,120.97

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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.