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Finding the Fourth Proportional to 64,808.96, 89,441.04 and 36,130.56

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Solution

The fourth proportional to 64,808.96, 89,441.04 and 36,130.56 is: 49,862.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,808.96 : 89,441.04 = 36,130.56 : x
  2. Step 2: Convert to fraction form
    64,808.96/89,441.04 = 36,130.56/x
  3. Step 3: Cross multiply
    64,808.96x = 89,441.04 × 36,130.56
  4. Step 4: Simplify right side
    64,808.96x = 3,231,554,862.18
  5. Step 5: Solve for x
    x = 3,231,554,862.18/64,808.96
  6. Step 6: Final answer
    x = 49,862.78

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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.