Home / 91,409.52-126,144.78-51,123.12

Finding the Fourth Proportional to 91,409.52, 126,144.78 and 51,123.12

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Solution

The fourth proportional to 91,409.52, 126,144.78 and 51,123.12 is: 70,549.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,409.52 : 126,144.78 = 51,123.12 : x
  2. Step 2: Convert to fraction form
    91,409.52/126,144.78 = 51,123.12/x
  3. Step 3: Cross multiply
    91,409.52x = 126,144.78 × 51,123.12
  4. Step 4: Simplify right side
    91,409.52x = 6,448,914,725.31
  5. Step 5: Solve for x
    x = 6,448,914,725.31/91,409.52
  6. Step 6: Final answer
    x = 70,549.71

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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.