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Finding the Fourth Proportional to 69,380.47, 104,051.80 and 19,457.47

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Solution

The fourth proportional to 69,380.47, 104,051.80 and 19,457.47 is: 29,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,380.47 : 104,051.80 = 19,457.47 : x
  2. Step 2: Convert to fraction form
    69,380.47/104,051.80 = 19,457.47/x
  3. Step 3: Cross multiply
    69,380.47x = 104,051.80 × 19,457.47
  4. Step 4: Simplify right side
    69,380.47x = 2,024,584,776.95
  5. Step 5: Solve for x
    x = 2,024,584,776.95/69,380.47
  6. Step 6: Final answer
    x = 29,180.90

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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.