Home / 73,315.36-109,979.45-20,724.86

Finding the Fourth Proportional to 73,315.36, 109,979.45 and 20,724.86

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Solution

The fourth proportional to 73,315.36, 109,979.45 and 20,724.86 is: 31,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,315.36 : 109,979.45 = 20,724.86 : x
  2. Step 2: Convert to fraction form
    73,315.36/109,979.45 = 20,724.86/x
  3. Step 3: Cross multiply
    73,315.36x = 109,979.45 × 20,724.86
  4. Step 4: Simplify right side
    73,315.36x = 2,279,308,050.61
  5. Step 5: Solve for x
    x = 2,279,308,050.61/73,315.36
  6. Step 6: Final answer
    x = 31,089.10

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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.