Home / 81,059.84-121,632.56-57,519.48

Finding the Fourth Proportional to 81,059.84, 121,632.56 and 57,519.48

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Solution

The fourth proportional to 81,059.84, 121,632.56 and 57,519.48 is: 86,309.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,059.84 : 121,632.56 = 57,519.48 : x
  2. Step 2: Convert to fraction form
    81,059.84/121,632.56 = 57,519.48/x
  3. Step 3: Cross multiply
    81,059.84x = 121,632.56 × 57,519.48
  4. Step 4: Simplify right side
    81,059.84x = 6,996,241,314.67
  5. Step 5: Solve for x
    x = 6,996,241,314.67/81,059.84
  6. Step 6: Final answer
    x = 86,309.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.