Home / 79,447.20-109,637.85-43,638.01

Finding the Fourth Proportional to 79,447.20, 109,637.85 and 43,638.01

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Solution

The fourth proportional to 79,447.20, 109,637.85 and 43,638.01 is: 60,220.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,447.20 : 109,637.85 = 43,638.01 : x
  2. Step 2: Convert to fraction form
    79,447.20/109,637.85 = 43,638.01/x
  3. Step 3: Cross multiply
    79,447.20x = 109,637.85 × 43,638.01
  4. Step 4: Simplify right side
    79,447.20x = 4,784,377,484.23
  5. Step 5: Solve for x
    x = 4,784,377,484.23/79,447.20
  6. Step 6: Final answer
    x = 60,220.85

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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.