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Finding the Fourth Proportional to 45,707.12, 68,502.12 and 39,759.08

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Solution

The fourth proportional to 45,707.12, 68,502.12 and 39,759.08 is: 59,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,707.12 : 68,502.12 = 39,759.08 : x
  2. Step 2: Convert to fraction form
    45,707.12/68,502.12 = 39,759.08/x
  3. Step 3: Cross multiply
    45,707.12x = 68,502.12 × 39,759.08
  4. Step 4: Simplify right side
    45,707.12x = 2,723,581,269.25
  5. Step 5: Solve for x
    x = 2,723,581,269.25/45,707.12
  6. Step 6: Final answer
    x = 59,587.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.