Home / 81,161.36-111,967.04-47,612.24

Finding the Fourth Proportional to 81,161.36, 111,967.04 and 47,612.24

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Solution

The fourth proportional to 81,161.36, 111,967.04 and 47,612.24 is: 65,683.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.36 : 111,967.04 = 47,612.24 : x
  2. Step 2: Convert to fraction form
    81,161.36/111,967.04 = 47,612.24/x
  3. Step 3: Cross multiply
    81,161.36x = 111,967.04 × 47,612.24
  4. Step 4: Simplify right side
    81,161.36x = 5,331,001,580.57
  5. Step 5: Solve for x
    x = 5,331,001,580.57/81,161.36
  6. Step 6: Final answer
    x = 65,683.99

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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.