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Finding the Fourth Proportional to 78,808.08, 108,754.20 and 45,274.08

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Solution

The fourth proportional to 78,808.08, 108,754.20 and 45,274.08 is: 62,477.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808.08 : 108,754.20 = 45,274.08 : x
  2. Step 2: Convert to fraction form
    78,808.08/108,754.20 = 45,274.08/x
  3. Step 3: Cross multiply
    78,808.08x = 108,754.20 × 45,274.08
  4. Step 4: Simplify right side
    78,808.08x = 4,923,746,351.14
  5. Step 5: Solve for x
    x = 4,923,746,351.14/78,808.08
  6. Step 6: Final answer
    x = 62,477.68

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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.