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Finding the Fourth Proportional to 79,403.54, 109,577.86 and 45,411.50

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Solution

The fourth proportional to 79,403.54, 109,577.86 and 45,411.50 is: 62,668.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,403.54 : 109,577.86 = 45,411.50 : x
  2. Step 2: Convert to fraction form
    79,403.54/109,577.86 = 45,411.50/x
  3. Step 3: Cross multiply
    79,403.54x = 109,577.86 × 45,411.50
  4. Step 4: Simplify right side
    79,403.54x = 4,976,094,989.39
  5. Step 5: Solve for x
    x = 4,976,094,989.39/79,403.54
  6. Step 6: Final answer
    x = 62,668.43

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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.