Home / 91,076.40-136,614.60-31,905.90

Finding the Fourth Proportional to 91,076.40, 136,614.60 and 31,905.90

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Solution

The fourth proportional to 91,076.40, 136,614.60 and 31,905.90 is: 47,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,076.40 : 136,614.60 = 31,905.90 : x
  2. Step 2: Convert to fraction form
    91,076.40/136,614.60 = 31,905.90/x
  3. Step 3: Cross multiply
    91,076.40x = 136,614.60 × 31,905.90
  4. Step 4: Simplify right side
    91,076.40x = 4,358,811,766.14
  5. Step 5: Solve for x
    x = 4,358,811,766.14/91,076.40
  6. Step 6: Final answer
    x = 47,858.85

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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.