Home / 77,279.24-106,540.62-66,069.14

Finding the Fourth Proportional to 77,279.24, 106,540.62 and 66,069.14

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Solution

The fourth proportional to 77,279.24, 106,540.62 and 66,069.14 is: 91,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.24 : 106,540.62 = 66,069.14 : x
  2. Step 2: Convert to fraction form
    77,279.24/106,540.62 = 66,069.14/x
  3. Step 3: Cross multiply
    77,279.24x = 106,540.62 × 66,069.14
  4. Step 4: Simplify right side
    77,279.24x = 7,039,047,138.47
  5. Step 5: Solve for x
    x = 7,039,047,138.47/77,279.24
  6. Step 6: Final answer
    x = 91,085.87

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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.