Home / 79,415.20-109,589.28-47,601.76

Finding the Fourth Proportional to 79,415.20, 109,589.28 and 47,601.76

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Solution

The fourth proportional to 79,415.20, 109,589.28 and 47,601.76 is: 65,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,415.20 : 109,589.28 = 47,601.76 : x
  2. Step 2: Convert to fraction form
    79,415.20/109,589.28 = 47,601.76/x
  3. Step 3: Cross multiply
    79,415.20x = 109,589.28 × 47,601.76
  4. Step 4: Simplify right side
    79,415.20x = 5,216,642,605.13
  5. Step 5: Solve for x
    x = 5,216,642,605.13/79,415.20
  6. Step 6: Final answer
    x = 65,688.21

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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.