Home / 91,207.65-125,868.68-57,217.57

Finding the Fourth Proportional to 91,207.65, 125,868.68 and 57,217.57

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Solution

The fourth proportional to 91,207.65, 125,868.68 and 57,217.57 is: 78,961.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,207.65 : 125,868.68 = 57,217.57 : x
  2. Step 2: Convert to fraction form
    91,207.65/125,868.68 = 57,217.57/x
  3. Step 3: Cross multiply
    91,207.65x = 125,868.68 × 57,217.57
  4. Step 4: Simplify right side
    91,207.65x = 7,201,900,008.71
  5. Step 5: Solve for x
    x = 7,201,900,008.71/91,207.65
  6. Step 6: Final answer
    x = 78,961.58

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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.