Home / 79,477.40-109,633.20-49,617.56

Finding the Fourth Proportional to 79,477.40, 109,633.20 and 49,617.56

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Solution

The fourth proportional to 79,477.40, 109,633.20 and 49,617.56 is: 68,443.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,477.40 : 109,633.20 = 49,617.56 : x
  2. Step 2: Convert to fraction form
    79,477.40/109,633.20 = 49,617.56/x
  3. Step 3: Cross multiply
    79,477.40x = 109,633.20 × 49,617.56
  4. Step 4: Simplify right side
    79,477.40x = 5,439,731,967.01
  5. Step 5: Solve for x
    x = 5,439,731,967.01/79,477.40
  6. Step 6: Final answer
    x = 68,443.76

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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.