Home / 77,814.24-108,108.60-76,881.12

Finding the Fourth Proportional to 77,814.24, 108,108.60 and 76,881.12

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Solution

The fourth proportional to 77,814.24, 108,108.60 and 76,881.12 is: 106,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,814.24 : 108,108.60 = 76,881.12 : x
  2. Step 2: Convert to fraction form
    77,814.24/108,108.60 = 76,881.12/x
  3. Step 3: Cross multiply
    77,814.24x = 108,108.60 × 76,881.12
  4. Step 4: Simplify right side
    77,814.24x = 8,311,510,249.63
  5. Step 5: Solve for x
    x = 8,311,510,249.63/77,814.24
  6. Step 6: Final answer
    x = 106,812.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.