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Finding the Fourth Proportional to 68,909.58, 95,088.12 and 38,698.20

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Solution

The fourth proportional to 68,909.58, 95,088.12 and 38,698.20 is: 53,399.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,909.58 : 95,088.12 = 38,698.20 : x
  2. Step 2: Convert to fraction form
    68,909.58/95,088.12 = 38,698.20/x
  3. Step 3: Cross multiply
    68,909.58x = 95,088.12 × 38,698.20
  4. Step 4: Simplify right side
    68,909.58x = 3,679,739,085.38
  5. Step 5: Solve for x
    x = 3,679,739,085.38/68,909.58
  6. Step 6: Final answer
    x = 53,399.53

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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.