Home / 39,935.32-55,053.48-31,422.76

Finding the Fourth Proportional to 39,935.32, 55,053.48 and 31,422.76

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Solution

The fourth proportional to 39,935.32, 55,053.48 and 31,422.76 is: 43,318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,935.32 : 55,053.48 = 31,422.76 : x
  2. Step 2: Convert to fraction form
    39,935.32/55,053.48 = 31,422.76/x
  3. Step 3: Cross multiply
    39,935.32x = 55,053.48 × 31,422.76
  4. Step 4: Simplify right side
    39,935.32x = 1,729,932,289.20
  5. Step 5: Solve for x
    x = 1,729,932,289.20/39,935.32
  6. Step 6: Final answer
    x = 43,318.35

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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.