Home / 51,619.84-77,433.36-20,455

Finding the Fourth Proportional to 51,619.84, 77,433.36 and 20,455

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Solution

The fourth proportional to 51,619.84, 77,433.36 and 20,455 is: 30,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,619.84 : 77,433.36 = 20,455 : x
  2. Step 2: Convert to fraction form
    51,619.84/77,433.36 = 20,455/x
  3. Step 3: Cross multiply
    51,619.84x = 77,433.36 × 20,455
  4. Step 4: Simplify right side
    51,619.84x = 1,583,899,378.80
  5. Step 5: Solve for x
    x = 1,583,899,378.80/51,619.84
  6. Step 6: Final answer
    x = 30,683.93

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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.