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Finding the Fourth Proportional to 64,989.62, 89,685.68 and 36,697.14

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Solution

The fourth proportional to 64,989.62, 89,685.68 and 36,697.14 is: 50,642.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989.62 : 89,685.68 = 36,697.14 : x
  2. Step 2: Convert to fraction form
    64,989.62/89,685.68 = 36,697.14/x
  3. Step 3: Cross multiply
    64,989.62x = 89,685.68 × 36,697.14
  4. Step 4: Simplify right side
    64,989.62x = 3,291,207,954.96
  5. Step 5: Solve for x
    x = 3,291,207,954.96/64,989.62
  6. Step 6: Final answer
    x = 50,642.06

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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.