Home / 49,681.28-74,521.84-12,745.28

Finding the Fourth Proportional to 49,681.28, 74,521.84 and 12,745.28

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Solution

The fourth proportional to 49,681.28, 74,521.84 and 12,745.28 is: 19,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,681.28 : 74,521.84 = 12,745.28 : x
  2. Step 2: Convert to fraction form
    49,681.28/74,521.84 = 12,745.28/x
  3. Step 3: Cross multiply
    49,681.28x = 74,521.84 × 12,745.28
  4. Step 4: Simplify right side
    49,681.28x = 949,801,716.92
  5. Step 5: Solve for x
    x = 949,801,716.92/49,681.28
  6. Step 6: Final answer
    x = 19,117.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.