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Finding the Fourth Proportional to 67,851.60, 93,632.97 and 40,989.42

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Solution

The fourth proportional to 67,851.60, 93,632.97 and 40,989.42 is: 56,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,851.60 : 93,632.97 = 40,989.42 : x
  2. Step 2: Convert to fraction form
    67,851.60/93,632.97 = 40,989.42/x
  3. Step 3: Cross multiply
    67,851.60x = 93,632.97 × 40,989.42
  4. Step 4: Simplify right side
    67,851.60x = 3,837,961,133.18
  5. Step 5: Solve for x
    x = 3,837,961,133.18/67,851.60
  6. Step 6: Final answer
    x = 56,564.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.