Home / 86,542.74-129,815.15-30,384.26

Finding the Fourth Proportional to 86,542.74, 129,815.15 and 30,384.26

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Solution

The fourth proportional to 86,542.74, 129,815.15 and 30,384.26 is: 45,576.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,542.74 : 129,815.15 = 30,384.26 : x
  2. Step 2: Convert to fraction form
    86,542.74/129,815.15 = 30,384.26/x
  3. Step 3: Cross multiply
    86,542.74x = 129,815.15 × 30,384.26
  4. Step 4: Simplify right side
    86,542.74x = 3,944,337,269.54
  5. Step 5: Solve for x
    x = 3,944,337,269.54/86,542.74
  6. Step 6: Final answer
    x = 45,576.76

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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.