Home / 66,390.30-99,531.35-30,874.03

Finding the Fourth Proportional to 66,390.30, 99,531.35 and 30,874.03

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Solution

The fourth proportional to 66,390.30, 99,531.35 and 30,874.03 is: 46,285.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,390.30 : 99,531.35 = 30,874.03 : x
  2. Step 2: Convert to fraction form
    66,390.30/99,531.35 = 30,874.03/x
  3. Step 3: Cross multiply
    66,390.30x = 99,531.35 × 30,874.03
  4. Step 4: Simplify right side
    66,390.30x = 3,072,933,598.42
  5. Step 5: Solve for x
    x = 3,072,933,598.42/66,390.30
  6. Step 6: Final answer
    x = 46,285.88

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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.