Home / 90,889.75-136,335.30-31,725.47

Finding the Fourth Proportional to 90,889.75, 136,335.30 and 31,725.47

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Solution

The fourth proportional to 90,889.75, 136,335.30 and 31,725.47 is: 47,588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,889.75 : 136,335.30 = 31,725.47 : x
  2. Step 2: Convert to fraction form
    90,889.75/136,335.30 = 31,725.47/x
  3. Step 3: Cross multiply
    90,889.75x = 136,335.30 × 31,725.47
  4. Step 4: Simplify right side
    90,889.75x = 4,325,301,470.09
  5. Step 5: Solve for x
    x = 4,325,301,470.09/90,889.75
  6. Step 6: Final answer
    x = 47,588.44

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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.