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Finding the Fourth Proportional to 68,697.75, 94,802.90 and 38,889.75

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Solution

The fourth proportional to 68,697.75, 94,802.90 and 38,889.75 is: 53,667.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,697.75 : 94,802.90 = 38,889.75 : x
  2. Step 2: Convert to fraction form
    68,697.75/94,802.90 = 38,889.75/x
  3. Step 3: Cross multiply
    68,697.75x = 94,802.90 × 38,889.75
  4. Step 4: Simplify right side
    68,697.75x = 3,686,860,885.83
  5. Step 5: Solve for x
    x = 3,686,860,885.83/68,697.75
  6. Step 6: Final answer
    x = 53,667.86

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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.