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Finding the Fourth Proportional to 79,260.99, 109,384.56 and 45,280.51

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Solution

The fourth proportional to 79,260.99, 109,384.56 and 45,280.51 is: 62,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,260.99 : 109,384.56 = 45,280.51 : x
  2. Step 2: Convert to fraction form
    79,260.99/109,384.56 = 45,280.51/x
  3. Step 3: Cross multiply
    79,260.99x = 109,384.56 × 45,280.51
  4. Step 4: Simplify right side
    79,260.99x = 4,952,988,662.93
  5. Step 5: Solve for x
    x = 4,952,988,662.93/79,260.99
  6. Step 6: Final answer
    x = 62,489.61

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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.