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Finding the Fourth Proportional to 68,562.72, 94,637.76 and 39,890.88

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Solution

The fourth proportional to 68,562.72, 94,637.76 and 39,890.88 is: 55,061.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,562.72 : 94,637.76 = 39,890.88 : x
  2. Step 2: Convert to fraction form
    68,562.72/94,637.76 = 39,890.88/x
  3. Step 3: Cross multiply
    68,562.72x = 94,637.76 × 39,890.88
  4. Step 4: Simplify right side
    68,562.72x = 3,775,183,527.63
  5. Step 5: Solve for x
    x = 3,775,183,527.63/68,562.72
  6. Step 6: Final answer
    x = 55,061.75

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1.5x scale

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.