Home / 66,813.76-92,161.28-42,971.52

Finding the Fourth Proportional to 66,813.76, 92,161.28 and 42,971.52

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Solution

The fourth proportional to 66,813.76, 92,161.28 and 42,971.52 is: 59,273.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,813.76 : 92,161.28 = 42,971.52 : x
  2. Step 2: Convert to fraction form
    66,813.76/92,161.28 = 42,971.52/x
  3. Step 3: Cross multiply
    66,813.76x = 92,161.28 × 42,971.52
  4. Step 4: Simplify right side
    66,813.76x = 3,960,310,286.75
  5. Step 5: Solve for x
    x = 3,960,310,286.75/66,813.76
  6. Step 6: Final answer
    x = 59,273.87

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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.