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Finding the Fourth Proportional to 104,383.80, 156,345.30 and 42,022.20

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Solution

The fourth proportional to 104,383.80, 156,345.30 and 42,022.20 is: 62,940.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,383.80 : 156,345.30 = 42,022.20 : x
  2. Step 2: Convert to fraction form
    104,383.80/156,345.30 = 42,022.20/x
  3. Step 3: Cross multiply
    104,383.80x = 156,345.30 × 42,022.20
  4. Step 4: Simplify right side
    104,383.80x = 6,569,973,465.66
  5. Step 5: Solve for x
    x = 6,569,973,465.66/104,383.80
  6. Step 6: Final answer
    x = 62,940.55

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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.