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Finding the Fourth Proportional to 79,170.72, 109,228.50 and 45,154.77

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Solution

The fourth proportional to 79,170.72, 109,228.50 and 45,154.77 is: 62,298.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,170.72 : 109,228.50 = 45,154.77 : x
  2. Step 2: Convert to fraction form
    79,170.72/109,228.50 = 45,154.77/x
  3. Step 3: Cross multiply
    79,170.72x = 109,228.50 × 45,154.77
  4. Step 4: Simplify right side
    79,170.72x = 4,932,187,385.34
  5. Step 5: Solve for x
    x = 4,932,187,385.34/79,170.72
  6. Step 6: Final answer
    x = 62,298.13

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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.