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Finding the Fourth Proportional to 79,273.45, 109,393.21 and 45,275.28

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Solution

The fourth proportional to 79,273.45, 109,393.21 and 45,275.28 is: 62,477.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,273.45 : 109,393.21 = 45,275.28 : x
  2. Step 2: Convert to fraction form
    79,273.45/109,393.21 = 45,275.28/x
  3. Step 3: Cross multiply
    79,273.45x = 109,393.21 × 45,275.28
  4. Step 4: Simplify right side
    79,273.45x = 4,952,807,439.51
  5. Step 5: Solve for x
    x = 4,952,807,439.51/79,273.45
  6. Step 6: Final answer
    x = 62,477.51

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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.