Home / 53,489.20-80,291.40-30,161.20

Finding the Fourth Proportional to 53,489.20, 80,291.40 and 30,161.20

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Solution

The fourth proportional to 53,489.20, 80,291.40 and 30,161.20 is: 45,274.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,489.20 : 80,291.40 = 30,161.20 : x
  2. Step 2: Convert to fraction form
    53,489.20/80,291.40 = 30,161.20/x
  3. Step 3: Cross multiply
    53,489.20x = 80,291.40 × 30,161.20
  4. Step 4: Simplify right side
    53,489.20x = 2,421,684,973.68
  5. Step 5: Solve for x
    x = 2,421,684,973.68/53,489.20
  6. Step 6: Final answer
    x = 45,274.28

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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.