Home / 55,608.20-83,412.30-31,988.60

Finding the Fourth Proportional to 55,608.20, 83,412.30 and 31,988.60

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Solution

The fourth proportional to 55,608.20, 83,412.30 and 31,988.60 is: 47,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,608.20 : 83,412.30 = 31,988.60 : x
  2. Step 2: Convert to fraction form
    55,608.20/83,412.30 = 31,988.60/x
  3. Step 3: Cross multiply
    55,608.20x = 83,412.30 × 31,988.60
  4. Step 4: Simplify right side
    55,608.20x = 2,668,242,699.78
  5. Step 5: Solve for x
    x = 2,668,242,699.78/55,608.20
  6. Step 6: Final answer
    x = 47,982.90

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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.