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Finding the Fourth Proportional to 77,638.69, 116,482.65 and 27,717.72

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Solution

The fourth proportional to 77,638.69, 116,482.65 and 27,717.72 is: 41,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,638.69 : 116,482.65 = 27,717.72 : x
  2. Step 2: Convert to fraction form
    77,638.69/116,482.65 = 27,717.72/x
  3. Step 3: Cross multiply
    77,638.69x = 116,482.65 × 27,717.72
  4. Step 4: Simplify right side
    77,638.69x = 3,228,633,477.56
  5. Step 5: Solve for x
    x = 3,228,633,477.56/77,638.69
  6. Step 6: Final answer
    x = 41,585.37

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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.