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Finding the Fourth Proportional to 81,698.58, 112,756.23 and 49,885.92

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Solution

The fourth proportional to 81,698.58, 112,756.23 and 49,885.92 is: 68,850.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,698.58 : 112,756.23 = 49,885.92 : x
  2. Step 2: Convert to fraction form
    81,698.58/112,756.23 = 49,885.92/x
  3. Step 3: Cross multiply
    81,698.58x = 112,756.23 × 49,885.92
  4. Step 4: Simplify right side
    81,698.58x = 5,624,948,269.28
  5. Step 5: Solve for x
    x = 5,624,948,269.28/81,698.58
  6. Step 6: Final answer
    x = 68,850.01

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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.