Home / 77,630.35-107,128.41-48,944.20

Finding the Fourth Proportional to 77,630.35, 107,128.41 and 48,944.20

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Solution

The fourth proportional to 77,630.35, 107,128.41 and 48,944.20 is: 67,542.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,630.35 : 107,128.41 = 48,944.20 : x
  2. Step 2: Convert to fraction form
    77,630.35/107,128.41 = 48,944.20/x
  3. Step 3: Cross multiply
    77,630.35x = 107,128.41 × 48,944.20
  4. Step 4: Simplify right side
    77,630.35x = 5,243,314,324.72
  5. Step 5: Solve for x
    x = 5,243,314,324.72/77,630.35
  6. Step 6: Final answer
    x = 67,542.07

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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.