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Finding the Fourth Proportional to 64,986.63, 89,681.54 and 36,694.14

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Solution

The fourth proportional to 64,986.63, 89,681.54 and 36,694.14 is: 50,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,986.63 : 89,681.54 = 36,694.14 : x
  2. Step 2: Convert to fraction form
    64,986.63/89,681.54 = 36,694.14/x
  3. Step 3: Cross multiply
    64,986.63x = 89,681.54 × 36,694.14
  4. Step 4: Simplify right side
    64,986.63x = 3,290,786,984.18
  5. Step 5: Solve for x
    x = 3,290,786,984.18/64,986.63
  6. Step 6: Final answer
    x = 50,637.91

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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.