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Finding the Fourth Proportional to 57,010.65, 78,674.19 and 31,517.67

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Solution

The fourth proportional to 57,010.65, 78,674.19 and 31,517.67 is: 43,494.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,010.65 : 78,674.19 = 31,517.67 : x
  2. Step 2: Convert to fraction form
    57,010.65/78,674.19 = 31,517.67/x
  3. Step 3: Cross multiply
    57,010.65x = 78,674.19 × 31,517.67
  4. Step 4: Simplify right side
    57,010.65x = 2,479,626,670.96
  5. Step 5: Solve for x
    x = 2,479,626,670.96/57,010.65
  6. Step 6: Final answer
    x = 43,494.09

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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.