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Finding the Fourth Proportional to 77,719.80, 116,502.90 and 30,910.20

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Solution

The fourth proportional to 77,719.80, 116,502.90 and 30,910.20 is: 46,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,719.80 : 116,502.90 = 30,910.20 : x
  2. Step 2: Convert to fraction form
    77,719.80/116,502.90 = 30,910.20/x
  3. Step 3: Cross multiply
    77,719.80x = 116,502.90 × 30,910.20
  4. Step 4: Simplify right side
    77,719.80x = 3,601,127,939.58
  5. Step 5: Solve for x
    x = 3,601,127,939.58/77,719.80
  6. Step 6: Final answer
    x = 46,334.76

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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.