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Finding the Fourth Proportional to 88,045.60, 132,068.40 and 31,912.60

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Solution

The fourth proportional to 88,045.60, 132,068.40 and 31,912.60 is: 47,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,045.60 : 132,068.40 = 31,912.60 : x
  2. Step 2: Convert to fraction form
    88,045.60/132,068.40 = 31,912.60/x
  3. Step 3: Cross multiply
    88,045.60x = 132,068.40 × 31,912.60
  4. Step 4: Simplify right side
    88,045.60x = 4,214,646,021.84
  5. Step 5: Solve for x
    x = 4,214,646,021.84/88,045.60
  6. Step 6: Final answer
    x = 47,868.90

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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.