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Finding the Fourth Proportional to 63,886.08, 88,128.09 and 40,008.09

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Solution

The fourth proportional to 63,886.08, 88,128.09 and 40,008.09 is: 55,189.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,886.08 : 88,128.09 = 40,008.09 : x
  2. Step 2: Convert to fraction form
    63,886.08/88,128.09 = 40,008.09/x
  3. Step 3: Cross multiply
    63,886.08x = 88,128.09 × 40,008.09
  4. Step 4: Simplify right side
    63,886.08x = 3,525,836,556.25
  5. Step 5: Solve for x
    x = 3,525,836,556.25/63,886.08
  6. Step 6: Final answer
    x = 55,189.43

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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.