Home / 91,508.12-126,275.36-51,215.10

Finding the Fourth Proportional to 91,508.12, 126,275.36 and 51,215.10

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Solution

The fourth proportional to 91,508.12, 126,275.36 and 51,215.10 is: 70,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,508.12 : 126,275.36 = 51,215.10 : x
  2. Step 2: Convert to fraction form
    91,508.12/126,275.36 = 51,215.10/x
  3. Step 3: Cross multiply
    91,508.12x = 126,275.36 × 51,215.10
  4. Step 4: Simplify right side
    91,508.12x = 6,467,205,189.94
  5. Step 5: Solve for x
    x = 6,467,205,189.94/91,508.12
  6. Step 6: Final answer
    x = 70,673.57

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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.