Home / 91,877.20-126,782.76-51,587.80

Finding the Fourth Proportional to 91,877.20, 126,782.76 and 51,587.80

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Solution

The fourth proportional to 91,877.20, 126,782.76 and 51,587.80 is: 71,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,877.20 : 126,782.76 = 51,587.80 : x
  2. Step 2: Convert to fraction form
    91,877.20/126,782.76 = 51,587.80/x
  3. Step 3: Cross multiply
    91,877.20x = 126,782.76 × 51,587.80
  4. Step 4: Simplify right side
    91,877.20x = 6,540,443,666.33
  5. Step 5: Solve for x
    x = 6,540,443,666.33/91,877.20
  6. Step 6: Final answer
    x = 71,186.80

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1.5x scale

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.