Home / 77,121.72-106,423.74-43,131.56

Finding the Fourth Proportional to 77,121.72, 106,423.74 and 43,131.56

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Solution

The fourth proportional to 77,121.72, 106,423.74 and 43,131.56 is: 59,519.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,121.72 : 106,423.74 = 43,131.56 : x
  2. Step 2: Convert to fraction form
    77,121.72/106,423.74 = 43,131.56/x
  3. Step 3: Cross multiply
    77,121.72x = 106,423.74 × 43,131.56
  4. Step 4: Simplify right side
    77,121.72x = 4,590,221,395.12
  5. Step 5: Solve for x
    x = 4,590,221,395.12/77,121.72
  6. Step 6: Final answer
    x = 59,519.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.