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Finding the Fourth Proportional to 79,638.75, 109,904.06 and 45,653.68

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Solution

The fourth proportional to 79,638.75, 109,904.06 and 45,653.68 is: 63,003.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,638.75 : 109,904.06 = 45,653.68 : x
  2. Step 2: Convert to fraction form
    79,638.75/109,904.06 = 45,653.68/x
  3. Step 3: Cross multiply
    79,638.75x = 109,904.06 × 45,653.68
  4. Step 4: Simplify right side
    79,638.75x = 5,017,524,625.31
  5. Step 5: Solve for x
    x = 5,017,524,625.31/79,638.75
  6. Step 6: Final answer
    x = 63,003.56

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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.