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Finding the Fourth Proportional to 79,145.09, 109,220.19 and 43,335.09

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Solution

The fourth proportional to 79,145.09, 109,220.19 and 43,335.09 is: 59,802.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,145.09 : 109,220.19 = 43,335.09 : x
  2. Step 2: Convert to fraction form
    79,145.09/109,220.19 = 43,335.09/x
  3. Step 3: Cross multiply
    79,145.09x = 109,220.19 × 43,335.09
  4. Step 4: Simplify right side
    79,145.09x = 4,733,066,763.47
  5. Step 5: Solve for x
    x = 4,733,066,763.47/79,145.09
  6. Step 6: Final answer
    x = 59,802.41

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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.