Home / 84,724.94-126,990.75-39,699.20

Finding the Fourth Proportional to 84,724.94, 126,990.75 and 39,699.20

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Solution

The fourth proportional to 84,724.94, 126,990.75 and 39,699.20 is: 59,503.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,724.94 : 126,990.75 = 39,699.20 : x
  2. Step 2: Convert to fraction form
    84,724.94/126,990.75 = 39,699.20/x
  3. Step 3: Cross multiply
    84,724.94x = 126,990.75 × 39,699.20
  4. Step 4: Simplify right side
    84,724.94x = 5,041,431,648.75
  5. Step 5: Solve for x
    x = 5,041,431,648.75/84,724.94
  6. Step 6: Final answer
    x = 59,503.51

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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.