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Finding the Fourth Proportional to 68,987.56, 95,203.20 and 40,308.88

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Solution

The fourth proportional to 68,987.56, 95,203.20 and 40,308.88 is: 55,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,987.56 : 95,203.20 = 40,308.88 : x
  2. Step 2: Convert to fraction form
    68,987.56/95,203.20 = 40,308.88/x
  3. Step 3: Cross multiply
    68,987.56x = 95,203.20 × 40,308.88
  4. Step 4: Simplify right side
    68,987.56x = 3,837,534,364.42
  5. Step 5: Solve for x
    x = 3,837,534,364.42/68,987.56
  6. Step 6: Final answer
    x = 55,626.47

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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.