Home / 39,336.40-54,353.28-31,443.76

Finding the Fourth Proportional to 39,336.40, 54,353.28 and 31,443.76

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Solution

The fourth proportional to 39,336.40, 54,353.28 and 31,443.76 is: 43,447.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,336.40 : 54,353.28 = 31,443.76 : x
  2. Step 2: Convert to fraction form
    39,336.40/54,353.28 = 31,443.76/x
  3. Step 3: Cross multiply
    39,336.40x = 54,353.28 × 31,443.76
  4. Step 4: Simplify right side
    39,336.40x = 1,709,071,491.53
  5. Step 5: Solve for x
    x = 1,709,071,491.53/39,336.40
  6. Step 6: Final answer
    x = 43,447.58

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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.