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Finding the Fourth Proportional to 68,858.16, 95,015.12 and 38,642.32

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Solution

The fourth proportional to 68,858.16, 95,015.12 and 38,642.32 is: 53,321.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,858.16 : 95,015.12 = 38,642.32 : x
  2. Step 2: Convert to fraction form
    68,858.16/95,015.12 = 38,642.32/x
  3. Step 3: Cross multiply
    68,858.16x = 95,015.12 × 38,642.32
  4. Step 4: Simplify right side
    68,858.16x = 3,671,604,671.88
  5. Step 5: Solve for x
    x = 3,671,604,671.88/68,858.16
  6. Step 6: Final answer
    x = 53,321.27

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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.