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Finding the Fourth Proportional to 87,637.94, 120,940.20 and 47,351.58

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Solution

The fourth proportional to 87,637.94, 120,940.20 and 47,351.58 is: 65,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,637.94 : 120,940.20 = 47,351.58 : x
  2. Step 2: Convert to fraction form
    87,637.94/120,940.20 = 47,351.58/x
  3. Step 3: Cross multiply
    87,637.94x = 120,940.20 × 47,351.58
  4. Step 4: Simplify right side
    87,637.94x = 5,726,709,555.52
  5. Step 5: Solve for x
    x = 5,726,709,555.52/87,637.94
  6. Step 6: Final answer
    x = 65,345.10

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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.