Home / 91,381.50-126,121.05-53,648.46

Finding the Fourth Proportional to 91,381.50, 126,121.05 and 53,648.46

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Solution

The fourth proportional to 91,381.50, 126,121.05 and 53,648.46 is: 74,043.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,381.50 : 126,121.05 = 53,648.46 : x
  2. Step 2: Convert to fraction form
    91,381.50/126,121.05 = 53,648.46/x
  3. Step 3: Cross multiply
    91,381.50x = 126,121.05 × 53,648.46
  4. Step 4: Simplify right side
    91,381.50x = 6,766,200,106.08
  5. Step 5: Solve for x
    x = 6,766,200,106.08/91,381.50
  6. Step 6: Final answer
    x = 74,043.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.