Home / 79,639.24-109,896.06-45,647.32

Finding the Fourth Proportional to 79,639.24, 109,896.06 and 45,647.32

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Solution

The fourth proportional to 79,639.24, 109,896.06 and 45,647.32 is: 62,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,639.24 : 109,896.06 = 45,647.32 : x
  2. Step 2: Convert to fraction form
    79,639.24/109,896.06 = 45,647.32/x
  3. Step 3: Cross multiply
    79,639.24x = 109,896.06 × 45,647.32
  4. Step 4: Simplify right side
    79,639.24x = 5,016,460,617.56
  5. Step 5: Solve for x
    x = 5,016,460,617.56/79,639.24
  6. Step 6: Final answer
    x = 62,989.81

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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.