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Finding the Fourth Proportional to 69,068.59, 103,592.61 and 19,143.47

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Solution

The fourth proportional to 69,068.59, 103,592.61 and 19,143.47 is: 28,712.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,068.59 : 103,592.61 = 19,143.47 : x
  2. Step 2: Convert to fraction form
    69,068.59/103,592.61 = 19,143.47/x
  3. Step 3: Cross multiply
    69,068.59x = 103,592.61 × 19,143.47
  4. Step 4: Simplify right side
    69,068.59x = 1,983,122,280.74
  5. Step 5: Solve for x
    x = 1,983,122,280.74/69,068.59
  6. Step 6: Final answer
    x = 28,712.36

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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.