Home / 77,501.38-115,949.92-67,937.78

Finding the Fourth Proportional to 77,501.38, 115,949.92 and 67,937.78

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Solution

The fourth proportional to 77,501.38, 115,949.92 and 67,937.78 is: 101,641.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,501.38 : 115,949.92 = 67,937.78 : x
  2. Step 2: Convert to fraction form
    77,501.38/115,949.92 = 67,937.78/x
  3. Step 3: Cross multiply
    77,501.38x = 115,949.92 × 67,937.78
  4. Step 4: Simplify right side
    77,501.38x = 7,877,380,079.58
  5. Step 5: Solve for x
    x = 7,877,380,079.58/77,501.38
  6. Step 6: Final answer
    x = 101,641.80

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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.