Home / 91,500.90-137,222.16-47,121.84

Finding the Fourth Proportional to 91,500.90, 137,222.16 and 47,121.84

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Solution

The fourth proportional to 91,500.90, 137,222.16 and 47,121.84 is: 70,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,500.90 : 137,222.16 = 47,121.84 : x
  2. Step 2: Convert to fraction form
    91,500.90/137,222.16 = 47,121.84/x
  3. Step 3: Cross multiply
    91,500.90x = 137,222.16 × 47,121.84
  4. Step 4: Simplify right side
    91,500.90x = 6,466,160,667.97
  5. Step 5: Solve for x
    x = 6,466,160,667.97/91,500.90
  6. Step 6: Final answer
    x = 70,667.73

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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.