Home / 66,231.20-99,364.40-28,775.20

Finding the Fourth Proportional to 66,231.20, 99,364.40 and 28,775.20

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Solution

The fourth proportional to 66,231.20, 99,364.40 and 28,775.20 is: 43,170.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,231.20 : 99,364.40 = 28,775.20 : x
  2. Step 2: Convert to fraction form
    66,231.20/99,364.40 = 28,775.20/x
  3. Step 3: Cross multiply
    66,231.20x = 99,364.40 × 28,775.20
  4. Step 4: Simplify right side
    66,231.20x = 2,859,230,482.88
  5. Step 5: Solve for x
    x = 2,859,230,482.88/66,231.20
  6. Step 6: Final answer
    x = 43,170.45

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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.