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Finding the Fourth Proportional to 79,078.77, 109,125.45 and 47,265.21

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Solution

The fourth proportional to 79,078.77, 109,125.45 and 47,265.21 is: 65,224.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,078.77 : 109,125.45 = 47,265.21 : x
  2. Step 2: Convert to fraction form
    79,078.77/109,125.45 = 47,265.21/x
  3. Step 3: Cross multiply
    79,078.77x = 109,125.45 × 47,265.21
  4. Step 4: Simplify right side
    79,078.77x = 5,157,837,310.59
  5. Step 5: Solve for x
    x = 5,157,837,310.59/79,078.77
  6. Step 6: Final answer
    x = 65,224.05

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1.5x scale

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.