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Finding the Fourth Proportional to 69,079.40, 103,624.95 and 19,159.49

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Solution

The fourth proportional to 69,079.40, 103,624.95 and 19,159.49 is: 28,740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,079.40 : 103,624.95 = 19,159.49 : x
  2. Step 2: Convert to fraction form
    69,079.40/103,624.95 = 19,159.49/x
  3. Step 3: Cross multiply
    69,079.40x = 103,624.95 × 19,159.49
  4. Step 4: Simplify right side
    69,079.40x = 1,985,401,193.28
  5. Step 5: Solve for x
    x = 1,985,401,193.28/69,079.40
  6. Step 6: Final answer
    x = 28,740.86

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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.