Home / 66,042.57-99,069.48-18,657.88

Finding the Fourth Proportional to 66,042.57, 99,069.48 and 18,657.88

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Solution

The fourth proportional to 66,042.57, 99,069.48 and 18,657.88 is: 27,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.57 : 99,069.48 = 18,657.88 : x
  2. Step 2: Convert to fraction form
    66,042.57/99,069.48 = 18,657.88/x
  3. Step 3: Cross multiply
    66,042.57x = 99,069.48 × 18,657.88
  4. Step 4: Simplify right side
    66,042.57x = 1,848,426,221.83
  5. Step 5: Solve for x
    x = 1,848,426,221.83/66,042.57
  6. Step 6: Final answer
    x = 27,988.40

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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.