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Finding the Fourth Proportional to 69,328.80, 103,996.08 and 57,723.84

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Solution

The fourth proportional to 69,328.80, 103,996.08 and 57,723.84 is: 86,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,328.80 : 103,996.08 = 57,723.84 : x
  2. Step 2: Convert to fraction form
    69,328.80/103,996.08 = 57,723.84/x
  3. Step 3: Cross multiply
    69,328.80x = 103,996.08 × 57,723.84
  4. Step 4: Simplify right side
    69,328.80x = 6,003,053,082.55
  5. Step 5: Solve for x
    x = 6,003,053,082.55/69,328.80
  6. Step 6: Final answer
    x = 86,588.16

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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.