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Finding the Fourth Proportional to 64,988.63, 89,684.33 and 36,696.14

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Solution

The fourth proportional to 64,988.63, 89,684.33 and 36,696.14 is: 50,640.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,988.63 : 89,684.33 = 36,696.14 : x
  2. Step 2: Convert to fraction form
    64,988.63/89,684.33 = 36,696.14/x
  3. Step 3: Cross multiply
    64,988.63x = 89,684.33 × 36,696.14
  4. Step 4: Simplify right side
    64,988.63x = 3,291,068,729.49
  5. Step 5: Solve for x
    x = 3,291,068,729.49/64,988.63
  6. Step 6: Final answer
    x = 50,640.68

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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.