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Finding the Fourth Proportional to 77,638.89, 116,482.94 and 27,717.89

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Solution

The fourth proportional to 77,638.89, 116,482.94 and 27,717.89 is: 41,585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,638.89 : 116,482.94 = 27,717.89 : x
  2. Step 2: Convert to fraction form
    77,638.89/116,482.94 = 27,717.89/x
  3. Step 3: Cross multiply
    77,638.89x = 116,482.94 × 27,717.89
  4. Step 4: Simplify right side
    77,638.89x = 3,228,660,596.79
  5. Step 5: Solve for x
    x = 3,228,660,596.79/77,638.89
  6. Step 6: Final answer
    x = 41,585.61

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1.5x scale

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.