Home / 91,671.35-126,512.30-51,385.12

Finding the Fourth Proportional to 91,671.35, 126,512.30 and 51,385.12

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Solution

The fourth proportional to 91,671.35, 126,512.30 and 51,385.12 is: 70,914.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,671.35 : 126,512.30 = 51,385.12 : x
  2. Step 2: Convert to fraction form
    91,671.35/126,512.30 = 51,385.12/x
  3. Step 3: Cross multiply
    91,671.35x = 126,512.30 × 51,385.12
  4. Step 4: Simplify right side
    91,671.35x = 6,500,849,084.41
  5. Step 5: Solve for x
    x = 6,500,849,084.41/91,671.35
  6. Step 6: Final answer
    x = 70,914.73

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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.