Home / 81,736.05-112,792.13-47,747.68

Finding the Fourth Proportional to 81,736.05, 112,792.13 and 47,747.68

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Solution

The fourth proportional to 81,736.05, 112,792.13 and 47,747.68 is: 65,889.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,736.05 : 112,792.13 = 47,747.68 : x
  2. Step 2: Convert to fraction form
    81,736.05/112,792.13 = 47,747.68/x
  3. Step 3: Cross multiply
    81,736.05x = 112,792.13 × 47,747.68
  4. Step 4: Simplify right side
    81,736.05x = 5,385,562,389.53
  5. Step 5: Solve for x
    x = 5,385,562,389.53/81,736.05
  6. Step 6: Final answer
    x = 65,889.68

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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.