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Finding the Fourth Proportional to 79,145.92, 109,223.20 and 43,335.76

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Solution

The fourth proportional to 79,145.92, 109,223.20 and 43,335.76 is: 59,804.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,145.92 : 109,223.20 = 43,335.76 : x
  2. Step 2: Convert to fraction form
    79,145.92/109,223.20 = 43,335.76/x
  3. Step 3: Cross multiply
    79,145.92x = 109,223.20 × 43,335.76
  4. Step 4: Simplify right side
    79,145.92x = 4,733,270,381.63
  5. Step 5: Solve for x
    x = 4,733,270,381.63/79,145.92
  6. Step 6: Final answer
    x = 59,804.35

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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.