Home / 66,869.82-92,281.40-40,013.46

Finding the Fourth Proportional to 66,869.82, 92,281.40 and 40,013.46

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Solution

The fourth proportional to 66,869.82, 92,281.40 and 40,013.46 is: 55,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869.82 : 92,281.40 = 40,013.46 : x
  2. Step 2: Convert to fraction form
    66,869.82/92,281.40 = 40,013.46/x
  3. Step 3: Cross multiply
    66,869.82x = 92,281.40 × 40,013.46
  4. Step 4: Simplify right side
    66,869.82x = 3,692,498,107.64
  5. Step 5: Solve for x
    x = 3,692,498,107.64/66,869.82
  6. Step 6: Final answer
    x = 55,219.20

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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.