Home / 53,459.20-80,246.40-30,131.20

Finding the Fourth Proportional to 53,459.20, 80,246.40 and 30,131.20

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Solution

The fourth proportional to 53,459.20, 80,246.40 and 30,131.20 is: 45,229.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,459.20 : 80,246.40 = 30,131.20 : x
  2. Step 2: Convert to fraction form
    53,459.20/80,246.40 = 30,131.20/x
  3. Step 3: Cross multiply
    53,459.20x = 80,246.40 × 30,131.20
  4. Step 4: Simplify right side
    53,459.20x = 2,417,920,327.68
  5. Step 5: Solve for x
    x = 2,417,920,327.68/53,459.20
  6. Step 6: Final answer
    x = 45,229.27

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1.5x scale

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.