Home / 90,624.40-135,936.60-57,491.35

Finding the Fourth Proportional to 90,624.40, 135,936.60 and 57,491.35

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Solution

The fourth proportional to 90,624.40, 135,936.60 and 57,491.35 is: 86,237.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,624.40 : 135,936.60 = 57,491.35 : x
  2. Step 2: Convert to fraction form
    90,624.40/135,936.60 = 57,491.35/x
  3. Step 3: Cross multiply
    90,624.40x = 135,936.60 × 57,491.35
  4. Step 4: Simplify right side
    90,624.40x = 7,815,178,648.41
  5. Step 5: Solve for x
    x = 7,815,178,648.41/90,624.40
  6. Step 6: Final answer
    x = 86,237.03

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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.