Home / 91,977.20-126,926.88-51,143.84

Finding the Fourth Proportional to 91,977.20, 126,926.88 and 51,143.84

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Solution

The fourth proportional to 91,977.20, 126,926.88 and 51,143.84 is: 70,577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,977.20 : 126,926.88 = 51,143.84 : x
  2. Step 2: Convert to fraction form
    91,977.20/126,926.88 = 51,143.84/x
  3. Step 3: Cross multiply
    91,977.20x = 126,926.88 × 51,143.84
  4. Step 4: Simplify right side
    91,977.20x = 6,491,528,042.42
  5. Step 5: Solve for x
    x = 6,491,528,042.42/91,977.20
  6. Step 6: Final answer
    x = 70,577.58

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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.