Home / 90,573.48-135,668.70-57,276.36

Finding the Fourth Proportional to 90,573.48, 135,668.70 and 57,276.36

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Solution

The fourth proportional to 90,573.48, 135,668.70 and 57,276.36 is: 85,793.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,573.48 : 135,668.70 = 57,276.36 : x
  2. Step 2: Convert to fraction form
    90,573.48/135,668.70 = 57,276.36/x
  3. Step 3: Cross multiply
    90,573.48x = 135,668.70 × 57,276.36
  4. Step 4: Simplify right side
    90,573.48x = 7,770,609,301.93
  5. Step 5: Solve for x
    x = 7,770,609,301.93/90,573.48
  6. Step 6: Final answer
    x = 85,793.43

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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.