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Finding the Fourth Proportional to 34,510.80, 47,515.68 and 31,357.56

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Solution

The fourth proportional to 34,510.80, 47,515.68 and 31,357.56 is: 43,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,510.80 : 47,515.68 = 31,357.56 : x
  2. Step 2: Convert to fraction form
    34,510.80/47,515.68 = 31,357.56/x
  3. Step 3: Cross multiply
    34,510.80x = 47,515.68 × 31,357.56
  4. Step 4: Simplify right side
    34,510.80x = 1,489,975,786.54
  5. Step 5: Solve for x
    x = 1,489,975,786.54/34,510.80
  6. Step 6: Final answer
    x = 43,174.19

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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.