Home / 66,613.49-99,991.37-28,681.55

Finding the Fourth Proportional to 66,613.49, 99,991.37 and 28,681.55

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Solution

The fourth proportional to 66,613.49, 99,991.37 and 28,681.55 is: 43,052.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,613.49 : 99,991.37 = 28,681.55 : x
  2. Step 2: Convert to fraction form
    66,613.49/99,991.37 = 28,681.55/x
  3. Step 3: Cross multiply
    66,613.49x = 99,991.37 × 28,681.55
  4. Step 4: Simplify right side
    66,613.49x = 2,867,907,799.91
  5. Step 5: Solve for x
    x = 2,867,907,799.91/66,613.49
  6. Step 6: Final answer
    x = 43,052.96

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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.