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Finding the Fourth Proportional to 86,207.70, 129,371.01 and 30,048.27

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Solution

The fourth proportional to 86,207.70, 129,371.01 and 30,048.27 is: 45,093.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,207.70 : 129,371.01 = 30,048.27 : x
  2. Step 2: Convert to fraction form
    86,207.70/129,371.01 = 30,048.27/x
  3. Step 3: Cross multiply
    86,207.70x = 129,371.01 × 30,048.27
  4. Step 4: Simplify right side
    86,207.70x = 3,887,375,038.65
  5. Step 5: Solve for x
    x = 3,887,375,038.65/86,207.70
  6. Step 6: Final answer
    x = 45,093.13

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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.