Home / 78,217.26-117,347.75-25,663.65

Finding the Fourth Proportional to 78,217.26, 117,347.75 and 25,663.65

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Solution

The fourth proportional to 78,217.26, 117,347.75 and 25,663.65 is: 38,502.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,217.26 : 117,347.75 = 25,663.65 : x
  2. Step 2: Convert to fraction form
    78,217.26/117,347.75 = 25,663.65/x
  3. Step 3: Cross multiply
    78,217.26x = 117,347.75 × 25,663.65
  4. Step 4: Simplify right side
    78,217.26x = 3,011,571,584.29
  5. Step 5: Solve for x
    x = 3,011,571,584.29/78,217.26
  6. Step 6: Final answer
    x = 38,502.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.