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Finding the Fourth Proportional to 68,911.58, 95,090.88 and 38,700.20

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Solution

The fourth proportional to 68,911.58, 95,090.88 and 38,700.20 is: 53,402.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,911.58 : 95,090.88 = 38,700.20 : x
  2. Step 2: Convert to fraction form
    68,911.58/95,090.88 = 38,700.20/x
  3. Step 3: Cross multiply
    68,911.58x = 95,090.88 × 38,700.20
  4. Step 4: Simplify right side
    68,911.58x = 3,680,036,074.18
  5. Step 5: Solve for x
    x = 3,680,036,074.18/68,911.58
  6. Step 6: Final answer
    x = 53,402.29

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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.