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Finding the Fourth Proportional to 69,710.46, 104,565.47 and 19,790.60

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Solution

The fourth proportional to 69,710.46, 104,565.47 and 19,790.60 is: 29,685.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,710.46 : 104,565.47 = 19,790.60 : x
  2. Step 2: Convert to fraction form
    69,710.46/104,565.47 = 19,790.60/x
  3. Step 3: Cross multiply
    69,710.46x = 104,565.47 × 19,790.60
  4. Step 4: Simplify right side
    69,710.46x = 2,069,413,390.58
  5. Step 5: Solve for x
    x = 2,069,413,390.58/69,710.46
  6. Step 6: Final answer
    x = 29,685.84

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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.