Home / 85,291.15-127,881.97-35,405.68

Finding the Fourth Proportional to 85,291.15, 127,881.97 and 35,405.68

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Solution

The fourth proportional to 85,291.15, 127,881.97 and 35,405.68 is: 53,085.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,291.15 : 127,881.97 = 35,405.68 : x
  2. Step 2: Convert to fraction form
    85,291.15/127,881.97 = 35,405.68/x
  3. Step 3: Cross multiply
    85,291.15x = 127,881.97 × 35,405.68
  4. Step 4: Simplify right side
    85,291.15x = 4,527,747,468.18
  5. Step 5: Solve for x
    x = 4,527,747,468.18/85,291.15
  6. Step 6: Final answer
    x = 53,085.79

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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.