Home / 79,142.36-109,213.08-43,331.72

Finding the Fourth Proportional to 79,142.36, 109,213.08 and 43,331.72

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Solution

The fourth proportional to 79,142.36, 109,213.08 and 43,331.72 is: 59,795.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,142.36 : 109,213.08 = 43,331.72 : x
  2. Step 2: Convert to fraction form
    79,142.36/109,213.08 = 43,331.72/x
  3. Step 3: Cross multiply
    79,142.36x = 109,213.08 × 43,331.72
  4. Step 4: Simplify right side
    79,142.36x = 4,732,390,602.90
  5. Step 5: Solve for x
    x = 4,732,390,602.90/79,142.36
  6. Step 6: Final answer
    x = 59,795.92

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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.