Home / 79,122.77-109,191.37-43,312.70

Finding the Fourth Proportional to 79,122.77, 109,191.37 and 43,312.70

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Solution

The fourth proportional to 79,122.77, 109,191.37 and 43,312.70 is: 59,772.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,122.77 : 109,191.37 = 43,312.70 : x
  2. Step 2: Convert to fraction form
    79,122.77/109,191.37 = 43,312.70/x
  3. Step 3: Cross multiply
    79,122.77x = 109,191.37 × 43,312.70
  4. Step 4: Simplify right side
    79,122.77x = 4,729,372,868.39
  5. Step 5: Solve for x
    x = 4,729,372,868.39/79,122.77
  6. Step 6: Final answer
    x = 59,772.59

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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.