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Finding the Fourth Proportional to 111,807.80, 167,679.30 and 40,722.20

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Solution

The fourth proportional to 111,807.80, 167,679.30 and 40,722.20 is: 61,071.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,807.80 : 167,679.30 = 40,722.20 : x
  2. Step 2: Convert to fraction form
    111,807.80/167,679.30 = 40,722.20/x
  3. Step 3: Cross multiply
    111,807.80x = 167,679.30 × 40,722.20
  4. Step 4: Simplify right side
    111,807.80x = 6,828,269,990.46
  5. Step 5: Solve for x
    x = 6,828,269,990.46/111,807.80
  6. Step 6: Final answer
    x = 61,071.50

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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.