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Finding the Fourth Proportional to 79,672.86, 109,944.24 and 45,679.70

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Solution

The fourth proportional to 79,672.86, 109,944.24 and 45,679.70 is: 63,035.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,672.86 : 109,944.24 = 45,679.70 : x
  2. Step 2: Convert to fraction form
    79,672.86/109,944.24 = 45,679.70/x
  3. Step 3: Cross multiply
    79,672.86x = 109,944.24 × 45,679.70
  4. Step 4: Simplify right side
    79,672.86x = 5,022,219,899.93
  5. Step 5: Solve for x
    x = 5,022,219,899.93/79,672.86
  6. Step 6: Final answer
    x = 63,035.52

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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.