Home / 85,215.15-117,605.66-51,234.71

Finding the Fourth Proportional to 85,215.15, 117,605.66 and 51,234.71

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Solution

The fourth proportional to 85,215.15, 117,605.66 and 51,234.71 is: 70,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,215.15 : 117,605.66 = 51,234.71 : x
  2. Step 2: Convert to fraction form
    85,215.15/117,605.66 = 51,234.71/x
  3. Step 3: Cross multiply
    85,215.15x = 117,605.66 × 51,234.71
  4. Step 4: Simplify right side
    85,215.15x = 6,025,491,040.26
  5. Step 5: Solve for x
    x = 6,025,491,040.26/85,215.15
  6. Step 6: Final answer
    x = 70,709.15

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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.