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Finding the Fourth Proportional to 69,162.64, 103,688.02 and 29,155.79

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Solution

The fourth proportional to 69,162.64, 103,688.02 and 29,155.79 is: 43,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,162.64 : 103,688.02 = 29,155.79 : x
  2. Step 2: Convert to fraction form
    69,162.64/103,688.02 = 29,155.79/x
  3. Step 3: Cross multiply
    69,162.64x = 103,688.02 × 29,155.79
  4. Step 4: Simplify right side
    69,162.64x = 3,023,106,432.30
  5. Step 5: Solve for x
    x = 3,023,106,432.30/69,162.64
  6. Step 6: Final answer
    x = 43,710.11

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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.