Home / 77,150.43-115,633.17-39,728.16

Finding the Fourth Proportional to 77,150.43, 115,633.17 and 39,728.16

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Solution

The fourth proportional to 77,150.43, 115,633.17 and 39,728.16 is: 59,544.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,150.43 : 115,633.17 = 39,728.16 : x
  2. Step 2: Convert to fraction form
    77,150.43/115,633.17 = 39,728.16/x
  3. Step 3: Cross multiply
    77,150.43x = 115,633.17 × 39,728.16
  4. Step 4: Simplify right side
    77,150.43x = 4,593,893,079.07
  5. Step 5: Solve for x
    x = 4,593,893,079.07/77,150.43
  6. Step 6: Final answer
    x = 59,544.62

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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.