Home / 77,279.40-115,919.10-37,816.20

Finding the Fourth Proportional to 77,279.40, 115,919.10 and 37,816.20

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Solution

The fourth proportional to 77,279.40, 115,919.10 and 37,816.20 is: 56,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.40 : 115,919.10 = 37,816.20 : x
  2. Step 2: Convert to fraction form
    77,279.40/115,919.10 = 37,816.20/x
  3. Step 3: Cross multiply
    77,279.40x = 115,919.10 × 37,816.20
  4. Step 4: Simplify right side
    77,279.40x = 4,383,619,869.42
  5. Step 5: Solve for x
    x = 4,383,619,869.42/77,279.40
  6. Step 6: Final answer
    x = 56,724.30

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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.