Home / 53,807.28-80,711.64-20,542.56

Finding the Fourth Proportional to 53,807.28, 80,711.64 and 20,542.56

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Solution

The fourth proportional to 53,807.28, 80,711.64 and 20,542.56 is: 30,814.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,807.28 : 80,711.64 = 20,542.56 : x
  2. Step 2: Convert to fraction form
    53,807.28/80,711.64 = 20,542.56/x
  3. Step 3: Cross multiply
    53,807.28x = 80,711.64 × 20,542.56
  4. Step 4: Simplify right side
    53,807.28x = 1,658,023,707.40
  5. Step 5: Solve for x
    x = 1,658,023,707.40/53,807.28
  6. Step 6: Final answer
    x = 30,814.11

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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.