Home / 77,727.72-107,004.84-74,157

Finding the Fourth Proportional to 77,727.72, 107,004.84 and 74,157

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Solution

The fourth proportional to 77,727.72, 107,004.84 and 74,157 is: 102,089.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,727.72 : 107,004.84 = 74,157 : x
  2. Step 2: Convert to fraction form
    77,727.72/107,004.84 = 74,157/x
  3. Step 3: Cross multiply
    77,727.72x = 107,004.84 × 74,157
  4. Step 4: Simplify right side
    77,727.72x = 7,935,157,919.88
  5. Step 5: Solve for x
    x = 7,935,157,919.88/77,727.72
  6. Step 6: Final answer
    x = 102,089.16

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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.