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Finding the Fourth Proportional to 78,521.45, 108,351.17 and 46,253.54

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Solution

The fourth proportional to 78,521.45, 108,351.17 and 46,253.54 is: 63,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,521.45 : 108,351.17 = 46,253.54 : x
  2. Step 2: Convert to fraction form
    78,521.45/108,351.17 = 46,253.54/x
  3. Step 3: Cross multiply
    78,521.45x = 108,351.17 × 46,253.54
  4. Step 4: Simplify right side
    78,521.45x = 5,011,624,402.62
  5. Step 5: Solve for x
    x = 5,011,624,402.62/78,521.45
  6. Step 6: Final answer
    x = 63,824.91

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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.