Home / 90,684.40-135,911.12-51,263.44

Finding the Fourth Proportional to 90,684.40, 135,911.12 and 51,263.44

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Solution

The fourth proportional to 90,684.40, 135,911.12 and 51,263.44 is: 76,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,684.40 : 135,911.12 = 51,263.44 : x
  2. Step 2: Convert to fraction form
    90,684.40/135,911.12 = 51,263.44/x
  3. Step 3: Cross multiply
    90,684.40x = 135,911.12 × 51,263.44
  4. Step 4: Simplify right side
    90,684.40x = 6,967,271,545.45
  5. Step 5: Solve for x
    x = 6,967,271,545.45/90,684.40
  6. Step 6: Final answer
    x = 76,829.88

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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.