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Finding the Fourth Proportional to 69,638.62, 96,065.04 and 42,787.12

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Solution

The fourth proportional to 69,638.62, 96,065.04 and 42,787.12 is: 59,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,638.62 : 96,065.04 = 42,787.12 : x
  2. Step 2: Convert to fraction form
    69,638.62/96,065.04 = 42,787.12/x
  3. Step 3: Cross multiply
    69,638.62x = 96,065.04 × 42,787.12
  4. Step 4: Simplify right side
    69,638.62x = 4,110,346,394.28
  5. Step 5: Solve for x
    x = 4,110,346,394.28/69,638.62
  6. Step 6: Final answer
    x = 59,023.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.