Home / 53,411.24-80,135.36-20,140.83

Finding the Fourth Proportional to 53,411.24, 80,135.36 and 20,140.83

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Solution

The fourth proportional to 53,411.24, 80,135.36 and 20,140.83 is: 30,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,411.24 : 80,135.36 = 20,140.83 : x
  2. Step 2: Convert to fraction form
    53,411.24/80,135.36 = 20,140.83/x
  3. Step 3: Cross multiply
    53,411.24x = 80,135.36 × 20,140.83
  4. Step 4: Simplify right side
    53,411.24x = 1,613,992,562.04
  5. Step 5: Solve for x
    x = 1,613,992,562.04/53,411.24
  6. Step 6: Final answer
    x = 30,218.22

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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.