Home / 91,984.72-126,921.64-51,693.20

Finding the Fourth Proportional to 91,984.72, 126,921.64 and 51,693.20

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Solution

The fourth proportional to 91,984.72, 126,921.64 and 51,693.20 is: 71,326.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,984.72 : 126,921.64 = 51,693.20 : x
  2. Step 2: Convert to fraction form
    91,984.72/126,921.64 = 51,693.20/x
  3. Step 3: Cross multiply
    91,984.72x = 126,921.64 × 51,693.20
  4. Step 4: Simplify right side
    91,984.72x = 6,560,985,720.85
  5. Step 5: Solve for x
    x = 6,560,985,720.85/91,984.72
  6. Step 6: Final answer
    x = 71,326.91

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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.