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Finding the Fourth Proportional to 63,688.52, 87,890.34 and 35,394.12

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Solution

The fourth proportional to 63,688.52, 87,890.34 and 35,394.12 is: 48,843.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,688.52 : 87,890.34 = 35,394.12 : x
  2. Step 2: Convert to fraction form
    63,688.52/87,890.34 = 35,394.12/x
  3. Step 3: Cross multiply
    63,688.52x = 87,890.34 × 35,394.12
  4. Step 4: Simplify right side
    63,688.52x = 3,110,801,240.80
  5. Step 5: Solve for x
    x = 3,110,801,240.80/63,688.52
  6. Step 6: Final answer
    x = 48,843.99

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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.