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Finding the Fourth Proportional to 86,720.70, 130,002.17 and 33,378.65

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Solution

The fourth proportional to 86,720.70, 130,002.17 and 33,378.65 is: 50,037.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.70 : 130,002.17 = 33,378.65 : x
  2. Step 2: Convert to fraction form
    86,720.70/130,002.17 = 33,378.65/x
  3. Step 3: Cross multiply
    86,720.70x = 130,002.17 × 33,378.65
  4. Step 4: Simplify right side
    86,720.70x = 4,339,296,931.67
  5. Step 5: Solve for x
    x = 4,339,296,931.67/86,720.70
  6. Step 6: Final answer
    x = 50,037.61

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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.