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Finding the Fourth Proportional to 69,578.88, 104,349.12 and 19,655.04

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Solution

The fourth proportional to 69,578.88, 104,349.12 and 19,655.04 is: 29,477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,578.88 : 104,349.12 = 19,655.04 : x
  2. Step 2: Convert to fraction form
    69,578.88/104,349.12 = 19,655.04/x
  3. Step 3: Cross multiply
    69,578.88x = 104,349.12 × 19,655.04
  4. Step 4: Simplify right side
    69,578.88x = 2,050,986,127.56
  5. Step 5: Solve for x
    x = 2,050,986,127.56/69,578.88
  6. Step 6: Final answer
    x = 29,477.14

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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.