Home / 79,424.83-109,616.15-45,428.61

Finding the Fourth Proportional to 79,424.83, 109,616.15 and 45,428.61

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Solution

The fourth proportional to 79,424.83, 109,616.15 and 45,428.61 is: 62,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,424.83 : 109,616.15 = 45,428.61 : x
  2. Step 2: Convert to fraction form
    79,424.83/109,616.15 = 45,428.61/x
  3. Step 3: Cross multiply
    79,424.83x = 109,616.15 × 45,428.61
  4. Step 4: Simplify right side
    79,424.83x = 4,979,709,328.05
  5. Step 5: Solve for x
    x = 4,979,709,328.05/79,424.83
  6. Step 6: Final answer
    x = 62,697.14

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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.