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Finding the Fourth Proportional to 77,081.46, 115,619.73 and 34,930.68

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Solution

The fourth proportional to 77,081.46, 115,619.73 and 34,930.68 is: 52,394.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,081.46 : 115,619.73 = 34,930.68 : x
  2. Step 2: Convert to fraction form
    77,081.46/115,619.73 = 34,930.68/x
  3. Step 3: Cross multiply
    77,081.46x = 115,619.73 × 34,930.68
  4. Step 4: Simplify right side
    77,081.46x = 4,038,675,790.32
  5. Step 5: Solve for x
    x = 4,038,675,790.32/77,081.46
  6. Step 6: Final answer
    x = 52,394.91

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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.