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Finding the Fourth Proportional to 67,154.80, 100,697.53 and 19,763.74

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Solution

The fourth proportional to 67,154.80, 100,697.53 and 19,763.74 is: 29,635.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,154.80 : 100,697.53 = 19,763.74 : x
  2. Step 2: Convert to fraction form
    67,154.80/100,697.53 = 19,763.74/x
  3. Step 3: Cross multiply
    67,154.80x = 100,697.53 × 19,763.74
  4. Step 4: Simplify right side
    67,154.80x = 1,990,159,844.28
  5. Step 5: Solve for x
    x = 1,990,159,844.28/67,154.80
  6. Step 6: Final answer
    x = 29,635.41

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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.