Home / 91,701.14-126,570.10-55,910.90

Finding the Fourth Proportional to 91,701.14, 126,570.10 and 55,910.90

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Solution

The fourth proportional to 91,701.14, 126,570.10 and 55,910.90 is: 77,170.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,701.14 : 126,570.10 = 55,910.90 : x
  2. Step 2: Convert to fraction form
    91,701.14/126,570.10 = 55,910.90/x
  3. Step 3: Cross multiply
    91,701.14x = 126,570.10 × 55,910.90
  4. Step 4: Simplify right side
    91,701.14x = 7,076,648,204.09
  5. Step 5: Solve for x
    x = 7,076,648,204.09/91,701.14
  6. Step 6: Final answer
    x = 77,170.78

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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.