Home / 86,627.20-129,942.80-42,247.84

Finding the Fourth Proportional to 86,627.20, 129,942.80 and 42,247.84

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Solution

The fourth proportional to 86,627.20, 129,942.80 and 42,247.84 is: 63,372.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,627.20 : 129,942.80 = 42,247.84 : x
  2. Step 2: Convert to fraction form
    86,627.20/129,942.80 = 42,247.84/x
  3. Step 3: Cross multiply
    86,627.20x = 129,942.80 × 42,247.84
  4. Step 4: Simplify right side
    86,627.20x = 5,489,802,623.55
  5. Step 5: Solve for x
    x = 5,489,802,623.55/86,627.20
  6. Step 6: Final answer
    x = 63,372.74

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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.