Home / 91,939.29-126,878.15-51,655.65

Finding the Fourth Proportional to 91,939.29, 126,878.15 and 51,655.65

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Solution

The fourth proportional to 91,939.29, 126,878.15 and 51,655.65 is: 71,285.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,939.29 : 126,878.15 = 51,655.65 : x
  2. Step 2: Convert to fraction form
    91,939.29/126,878.15 = 51,655.65/x
  3. Step 3: Cross multiply
    91,939.29x = 126,878.15 × 51,655.65
  4. Step 4: Simplify right side
    91,939.29x = 6,553,973,309.05
  5. Step 5: Solve for x
    x = 6,553,973,309.05/91,939.29
  6. Step 6: Final answer
    x = 71,285.88

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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.