Home / 85,540.33-128,302.24-26,360.11

Finding the Fourth Proportional to 85,540.33, 128,302.24 and 26,360.11

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Solution

The fourth proportional to 85,540.33, 128,302.24 and 26,360.11 is: 39,537.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,540.33 : 128,302.24 = 26,360.11 : x
  2. Step 2: Convert to fraction form
    85,540.33/128,302.24 = 26,360.11/x
  3. Step 3: Cross multiply
    85,540.33x = 128,302.24 × 26,360.11
  4. Step 4: Simplify right side
    85,540.33x = 3,382,061,159.65
  5. Step 5: Solve for x
    x = 3,382,061,159.65/85,540.33
  6. Step 6: Final answer
    x = 39,537.62

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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.