Home / 79,251.21-109,366.47-47,420.10

Finding the Fourth Proportional to 79,251.21, 109,366.47 and 47,420.10

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Solution

The fourth proportional to 79,251.21, 109,366.47 and 47,420.10 is: 65,439.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251.21 : 109,366.47 = 47,420.10 : x
  2. Step 2: Convert to fraction form
    79,251.21/109,366.47 = 47,420.10/x
  3. Step 3: Cross multiply
    79,251.21x = 109,366.47 × 47,420.10
  4. Step 4: Simplify right side
    79,251.21x = 5,186,168,944.05
  5. Step 5: Solve for x
    x = 5,186,168,944.05/79,251.21
  6. Step 6: Final answer
    x = 65,439.62

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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.