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Finding the Fourth Proportional to 40,701.60, 61,055.76 and 11,119.68

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Solution

The fourth proportional to 40,701.60, 61,055.76 and 11,119.68 is: 16,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,701.60 : 61,055.76 = 11,119.68 : x
  2. Step 2: Convert to fraction form
    40,701.60/61,055.76 = 11,119.68/x
  3. Step 3: Cross multiply
    40,701.60x = 61,055.76 × 11,119.68
  4. Step 4: Simplify right side
    40,701.60x = 678,920,513.36
  5. Step 5: Solve for x
    x = 678,920,513.36/40,701.60
  6. Step 6: Final answer
    x = 16,680.44

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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.