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Finding the Fourth Proportional to 64,880.43, 89,538.53 and 36,206.43

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Solution

The fourth proportional to 64,880.43, 89,538.53 and 36,206.43 is: 49,966.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,880.43 : 89,538.53 = 36,206.43 : x
  2. Step 2: Convert to fraction form
    64,880.43/89,538.53 = 36,206.43/x
  3. Step 3: Cross multiply
    64,880.43x = 89,538.53 × 36,206.43
  4. Step 4: Simplify right side
    64,880.43x = 3,241,870,337.72
  5. Step 5: Solve for x
    x = 3,241,870,337.72/64,880.43
  6. Step 6: Final answer
    x = 49,966.84

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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.