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Finding the Fourth Proportional to 111,038.60, 166,500.30 and 40,881.80

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Solution

The fourth proportional to 111,038.60, 166,500.30 and 40,881.80 is: 61,301.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,038.60 : 166,500.30 = 40,881.80 : x
  2. Step 2: Convert to fraction form
    111,038.60/166,500.30 = 40,881.80/x
  3. Step 3: Cross multiply
    111,038.60x = 166,500.30 × 40,881.80
  4. Step 4: Simplify right side
    111,038.60x = 6,806,831,964.54
  5. Step 5: Solve for x
    x = 6,806,831,964.54/111,038.60
  6. Step 6: Final answer
    x = 61,301.49

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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.