Home / 77,272.26-115,908.39-42,192.78

Finding the Fourth Proportional to 77,272.26, 115,908.39 and 42,192.78

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Solution

The fourth proportional to 77,272.26, 115,908.39 and 42,192.78 is: 63,289.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,272.26 : 115,908.39 = 42,192.78 : x
  2. Step 2: Convert to fraction form
    77,272.26/115,908.39 = 42,192.78/x
  3. Step 3: Cross multiply
    77,272.26x = 115,908.39 × 42,192.78
  4. Step 4: Simplify right side
    77,272.26x = 4,890,497,199.42
  5. Step 5: Solve for x
    x = 4,890,497,199.42/77,272.26
  6. Step 6: Final answer
    x = 63,289.17

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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.