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Finding the Fourth Proportional to 64,612, 89,170.03 and 36,323.16

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Solution

The fourth proportional to 64,612, 89,170.03 and 36,323.16 is: 50,129.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,612 : 89,170.03 = 36,323.16 : x
  2. Step 2: Convert to fraction form
    64,612/89,170.03 = 36,323.16/x
  3. Step 3: Cross multiply
    64,612x = 89,170.03 × 36,323.16
  4. Step 4: Simplify right side
    64,612x = 3,238,937,266.89
  5. Step 5: Solve for x
    x = 3,238,937,266.89/64,612
  6. Step 6: Final answer
    x = 50,129.04

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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.