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Finding the Fourth Proportional to 86,801.87, 130,213.22 and 30,630.38

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Solution

The fourth proportional to 86,801.87, 130,213.22 and 30,630.38 is: 45,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,801.87 : 130,213.22 = 30,630.38 : x
  2. Step 2: Convert to fraction form
    86,801.87/130,213.22 = 30,630.38/x
  3. Step 3: Cross multiply
    86,801.87x = 130,213.22 × 30,630.38
  4. Step 4: Simplify right side
    86,801.87x = 3,988,479,605.41
  5. Step 5: Solve for x
    x = 3,988,479,605.41/86,801.87
  6. Step 6: Final answer
    x = 45,949.24

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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.