Home / 77,685.28-107,162.40-53,825.92

Finding the Fourth Proportional to 77,685.28, 107,162.40 and 53,825.92

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Solution

The fourth proportional to 77,685.28, 107,162.40 and 53,825.92 is: 74,249.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,685.28 : 107,162.40 = 53,825.92 : x
  2. Step 2: Convert to fraction form
    77,685.28/107,162.40 = 53,825.92/x
  3. Step 3: Cross multiply
    77,685.28x = 107,162.40 × 53,825.92
  4. Step 4: Simplify right side
    77,685.28x = 5,768,114,769.41
  5. Step 5: Solve for x
    x = 5,768,114,769.41/77,685.28
  6. Step 6: Final answer
    x = 74,249.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.