Home / 79,099.36-109,156.40-45,113.20

Finding the Fourth Proportional to 79,099.36, 109,156.40 and 45,113.20

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Solution

The fourth proportional to 79,099.36, 109,156.40 and 45,113.20 is: 62,255.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,099.36 : 109,156.40 = 45,113.20 : x
  2. Step 2: Convert to fraction form
    79,099.36/109,156.40 = 45,113.20/x
  3. Step 3: Cross multiply
    79,099.36x = 109,156.40 × 45,113.20
  4. Step 4: Simplify right side
    79,099.36x = 4,924,394,504.48
  5. Step 5: Solve for x
    x = 4,924,394,504.48/79,099.36
  6. Step 6: Final answer
    x = 62,255.81

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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.