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Finding the Fourth Proportional to 87,763.71, 121,114.22 and 47,477.64

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Solution

The fourth proportional to 87,763.71, 121,114.22 and 47,477.64 is: 65,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,763.71 : 121,114.22 = 47,477.64 : x
  2. Step 2: Convert to fraction form
    87,763.71/121,114.22 = 47,477.64/x
  3. Step 3: Cross multiply
    87,763.71x = 121,114.22 × 47,477.64
  4. Step 4: Simplify right side
    87,763.71x = 5,750,217,098.65
  5. Step 5: Solve for x
    x = 5,750,217,098.65/87,763.71
  6. Step 6: Final answer
    x = 65,519.30

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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.