Home / 91,921.68-126,849.06-51,639.84

Finding the Fourth Proportional to 91,921.68, 126,849.06 and 51,639.84

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Solution

The fourth proportional to 91,921.68, 126,849.06 and 51,639.84 is: 71,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,921.68 : 126,849.06 = 51,639.84 : x
  2. Step 2: Convert to fraction form
    91,921.68/126,849.06 = 51,639.84/x
  3. Step 3: Cross multiply
    91,921.68x = 126,849.06 × 51,639.84
  4. Step 4: Simplify right side
    91,921.68x = 6,550,465,162.55
  5. Step 5: Solve for x
    x = 6,550,465,162.55/91,921.68
  6. Step 6: Final answer
    x = 71,261.37

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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.