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Finding the Fourth Proportional to 67,055.60, 100,648.20 and 40,811.60

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Solution

The fourth proportional to 67,055.60, 100,648.20 and 40,811.60 is: 61,256.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,055.60 : 100,648.20 = 40,811.60 : x
  2. Step 2: Convert to fraction form
    67,055.60/100,648.20 = 40,811.60/x
  3. Step 3: Cross multiply
    67,055.60x = 100,648.20 × 40,811.60
  4. Step 4: Simplify right side
    67,055.60x = 4,107,614,079.12
  5. Step 5: Solve for x
    x = 4,107,614,079.12/67,055.60
  6. Step 6: Final answer
    x = 61,256.84

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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.