Home / 90,811.53-125,381.70-56,833.74

Finding the Fourth Proportional to 90,811.53, 125,381.70 and 56,833.74

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Solution

The fourth proportional to 90,811.53, 125,381.70 and 56,833.74 is: 78,469.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.53 : 125,381.70 = 56,833.74 : x
  2. Step 2: Convert to fraction form
    90,811.53/125,381.70 = 56,833.74/x
  3. Step 3: Cross multiply
    90,811.53x = 125,381.70 × 56,833.74
  4. Step 4: Simplify right side
    90,811.53x = 7,125,910,938.56
  5. Step 5: Solve for x
    x = 7,125,910,938.56/90,811.53
  6. Step 6: Final answer
    x = 78,469.23

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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.