Home / 79,117.20-109,176.24-45,127.14

Finding the Fourth Proportional to 79,117.20, 109,176.24 and 45,127.14

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Solution

The fourth proportional to 79,117.20, 109,176.24 and 45,127.14 is: 62,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,117.20 : 109,176.24 = 45,127.14 : x
  2. Step 2: Convert to fraction form
    79,117.20/109,176.24 = 45,127.14/x
  3. Step 3: Cross multiply
    79,117.20x = 109,176.24 × 45,127.14
  4. Step 4: Simplify right side
    79,117.20x = 4,926,811,467.15
  5. Step 5: Solve for x
    x = 4,926,811,467.15/79,117.20
  6. Step 6: Final answer
    x = 62,272.32

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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.