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Finding the Fourth Proportional to 77,081.80, 115,622.70 and 50,816.20

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Solution

The fourth proportional to 77,081.80, 115,622.70 and 50,816.20 is: 76,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,081.80 : 115,622.70 = 50,816.20 : x
  2. Step 2: Convert to fraction form
    77,081.80/115,622.70 = 50,816.20/x
  3. Step 3: Cross multiply
    77,081.80x = 115,622.70 × 50,816.20
  4. Step 4: Simplify right side
    77,081.80x = 5,875,506,247.74
  5. Step 5: Solve for x
    x = 5,875,506,247.74/77,081.80
  6. Step 6: Final answer
    x = 76,224.30

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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.