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Finding the Fourth Proportional to 67,028.01, 100,555.80 and 19,644.63

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Solution

The fourth proportional to 67,028.01, 100,555.80 and 19,644.63 is: 29,470.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,028.01 : 100,555.80 = 19,644.63 : x
  2. Step 2: Convert to fraction form
    67,028.01/100,555.80 = 19,644.63/x
  3. Step 3: Cross multiply
    67,028.01x = 100,555.80 × 19,644.63
  4. Step 4: Simplify right side
    67,028.01x = 1,975,381,034.60
  5. Step 5: Solve for x
    x = 1,975,381,034.60/67,028.01
  6. Step 6: Final answer
    x = 29,470.98

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1.5x scale

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.