Home / 81,740.84-112,769.68-51,518.12

Finding the Fourth Proportional to 81,740.84, 112,769.68 and 51,518.12

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Solution

The fourth proportional to 81,740.84, 112,769.68 and 51,518.12 is: 71,074.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,740.84 : 112,769.68 = 51,518.12 : x
  2. Step 2: Convert to fraction form
    81,740.84/112,769.68 = 51,518.12/x
  3. Step 3: Cross multiply
    81,740.84x = 112,769.68 × 51,518.12
  4. Step 4: Simplify right side
    81,740.84x = 5,809,681,906.60
  5. Step 5: Solve for x
    x = 5,809,681,906.60/81,740.84
  6. Step 6: Final answer
    x = 71,074.41

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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.