Home / 85,510.26-128,282.19-26,335.86

Finding the Fourth Proportional to 85,510.26, 128,282.19 and 26,335.86

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Solution

The fourth proportional to 85,510.26, 128,282.19 and 26,335.86 is: 39,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,510.26 : 128,282.19 = 26,335.86 : x
  2. Step 2: Convert to fraction form
    85,510.26/128,282.19 = 26,335.86/x
  3. Step 3: Cross multiply
    85,510.26x = 128,282.19 × 26,335.86
  4. Step 4: Simplify right side
    85,510.26x = 3,378,421,796.33
  5. Step 5: Solve for x
    x = 3,378,421,796.33/85,510.26
  6. Step 6: Final answer
    x = 39,508.96

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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.