Home / 81,638.38-112,660.91-45,828.46

Finding the Fourth Proportional to 81,638.38, 112,660.91 and 45,828.46

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Solution

The fourth proportional to 81,638.38, 112,660.91 and 45,828.46 is: 63,243.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,638.38 : 112,660.91 = 45,828.46 : x
  2. Step 2: Convert to fraction form
    81,638.38/112,660.91 = 45,828.46/x
  3. Step 3: Cross multiply
    81,638.38x = 112,660.91 × 45,828.46
  4. Step 4: Simplify right side
    81,638.38x = 5,163,076,007.50
  5. Step 5: Solve for x
    x = 5,163,076,007.50/81,638.38
  6. Step 6: Final answer
    x = 63,243.24

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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.