Home / 90,260.20-135,428.70-57,005.80

Finding the Fourth Proportional to 90,260.20, 135,428.70 and 57,005.80

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Solution

The fourth proportional to 90,260.20, 135,428.70 and 57,005.80 is: 85,532.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,260.20 : 135,428.70 = 57,005.80 : x
  2. Step 2: Convert to fraction form
    90,260.20/135,428.70 = 57,005.80/x
  3. Step 3: Cross multiply
    90,260.20x = 135,428.70 × 57,005.80
  4. Step 4: Simplify right side
    90,260.20x = 7,720,221,386.46
  5. Step 5: Solve for x
    x = 7,720,221,386.46/90,260.20
  6. Step 6: Final answer
    x = 85,532.95

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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.