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Finding the Fourth Proportional to 40,871.66, 61,307.42 and 11,289.42

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Solution

The fourth proportional to 40,871.66, 61,307.42 and 11,289.42 is: 16,934.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,871.66 : 61,307.42 = 11,289.42 : x
  2. Step 2: Convert to fraction form
    40,871.66/61,307.42 = 11,289.42/x
  3. Step 3: Cross multiply
    40,871.66x = 61,307.42 × 11,289.42
  4. Step 4: Simplify right side
    40,871.66x = 692,125,213.50
  5. Step 5: Solve for x
    x = 692,125,213.50/40,871.66
  6. Step 6: Final answer
    x = 16,934.11

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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.