Home / 84,579.80-126,869.70-25,424.60

Finding the Fourth Proportional to 84,579.80, 126,869.70 and 25,424.60

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Solution

The fourth proportional to 84,579.80, 126,869.70 and 25,424.60 is: 38,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,579.80 : 126,869.70 = 25,424.60 : x
  2. Step 2: Convert to fraction form
    84,579.80/126,869.70 = 25,424.60/x
  3. Step 3: Cross multiply
    84,579.80x = 126,869.70 × 25,424.60
  4. Step 4: Simplify right side
    84,579.80x = 3,225,611,374.62
  5. Step 5: Solve for x
    x = 3,225,611,374.62/84,579.80
  6. Step 6: Final answer
    x = 38,136.90

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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.