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Finding the Fourth Proportional to 66,390.12, 99,595 and 22,007.08

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Solution

The fourth proportional to 66,390.12, 99,595 and 22,007.08 is: 33,013.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,390.12 : 99,595 = 22,007.08 : x
  2. Step 2: Convert to fraction form
    66,390.12/99,595 = 22,007.08/x
  3. Step 3: Cross multiply
    66,390.12x = 99,595 × 22,007.08
  4. Step 4: Simplify right side
    66,390.12x = 2,191,795,132.60
  5. Step 5: Solve for x
    x = 2,191,795,132.60/66,390.12
  6. Step 6: Final answer
    x = 33,013.88

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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.