Home / 81,289.50-112,183.88-45,477.38

Finding the Fourth Proportional to 81,289.50, 112,183.88 and 45,477.38

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Solution

The fourth proportional to 81,289.50, 112,183.88 and 45,477.38 is: 62,761.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,289.50 : 112,183.88 = 45,477.38 : x
  2. Step 2: Convert to fraction form
    81,289.50/112,183.88 = 45,477.38/x
  3. Step 3: Cross multiply
    81,289.50x = 112,183.88 × 45,477.38
  4. Step 4: Simplify right side
    81,289.50x = 5,101,828,940.63
  5. Step 5: Solve for x
    x = 5,101,828,940.63/81,289.50
  6. Step 6: Final answer
    x = 62,761.23

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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.