Home / 101,045.22-139,439.40-55,723.20

Finding the Fourth Proportional to 101,045.22, 139,439.40 and 55,723.20

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Solution

The fourth proportional to 101,045.22, 139,439.40 and 55,723.20 is: 76,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,045.22 : 139,439.40 = 55,723.20 : x
  2. Step 2: Convert to fraction form
    101,045.22/139,439.40 = 55,723.20/x
  3. Step 3: Cross multiply
    101,045.22x = 139,439.40 × 55,723.20
  4. Step 4: Simplify right side
    101,045.22x = 7,770,009,574.08
  5. Step 5: Solve for x
    x = 7,770,009,574.08/101,045.22
  6. Step 6: Final answer
    x = 76,896.36

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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.