Home / 89,972.33-135,040.40-47,887.75

Finding the Fourth Proportional to 89,972.33, 135,040.40 and 47,887.75

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Solution

The fourth proportional to 89,972.33, 135,040.40 and 47,887.75 is: 71,875.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,972.33 : 135,040.40 = 47,887.75 : x
  2. Step 2: Convert to fraction form
    89,972.33/135,040.40 = 47,887.75/x
  3. Step 3: Cross multiply
    89,972.33x = 135,040.40 × 47,887.75
  4. Step 4: Simplify right side
    89,972.33x = 6,466,780,000.46
  5. Step 5: Solve for x
    x = 6,466,780,000.46/89,972.33
  6. Step 6: Final answer
    x = 71,875.21

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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.