Home / 79,142.23-109,213.75-43,330.11

Finding the Fourth Proportional to 79,142.23, 109,213.75 and 43,330.11

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Solution

The fourth proportional to 79,142.23, 109,213.75 and 43,330.11 is: 59,794.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,142.23 : 109,213.75 = 43,330.11 : x
  2. Step 2: Convert to fraction form
    79,142.23/109,213.75 = 43,330.11/x
  3. Step 3: Cross multiply
    79,142.23x = 109,213.75 × 43,330.11
  4. Step 4: Simplify right side
    79,142.23x = 4,732,243,445.62
  5. Step 5: Solve for x
    x = 4,732,243,445.62/79,142.23
  6. Step 6: Final answer
    x = 59,794.16

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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.