Home / 71,165.20-106,644.12-40,009.36

Finding the Fourth Proportional to 71,165.20, 106,644.12 and 40,009.36

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Solution

The fourth proportional to 71,165.20, 106,644.12 and 40,009.36 is: 59,955.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,165.20 : 106,644.12 = 40,009.36 : x
  2. Step 2: Convert to fraction form
    71,165.20/106,644.12 = 40,009.36/x
  3. Step 3: Cross multiply
    71,165.20x = 106,644.12 × 40,009.36
  4. Step 4: Simplify right side
    71,165.20x = 4,266,762,988.96
  5. Step 5: Solve for x
    x = 4,266,762,988.96/71,165.20
  6. Step 6: Final answer
    x = 59,955.75

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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.