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Finding the Fourth Proportional to 79,418.42, 109,600.99 and 47,586.63

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Solution

The fourth proportional to 79,418.42, 109,600.99 and 47,586.63 is: 65,671.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,418.42 : 109,600.99 = 47,586.63 : x
  2. Step 2: Convert to fraction form
    79,418.42/109,600.99 = 47,586.63/x
  3. Step 3: Cross multiply
    79,418.42x = 109,600.99 × 47,586.63
  4. Step 4: Simplify right side
    79,418.42x = 5,215,541,639.80
  5. Step 5: Solve for x
    x = 5,215,541,639.80/79,418.42
  6. Step 6: Final answer
    x = 65,671.69

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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.