Home / 52,101.42-78,155.74-20,936.68

Finding the Fourth Proportional to 52,101.42, 78,155.74 and 20,936.68

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Solution

The fourth proportional to 52,101.42, 78,155.74 and 20,936.68 is: 31,406.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,101.42 : 78,155.74 = 20,936.68 : x
  2. Step 2: Convert to fraction form
    52,101.42/78,155.74 = 20,936.68/x
  3. Step 3: Cross multiply
    52,101.42x = 78,155.74 × 20,936.68
  4. Step 4: Simplify right side
    52,101.42x = 1,636,321,718.54
  5. Step 5: Solve for x
    x = 1,636,321,718.54/52,101.42
  6. Step 6: Final answer
    x = 31,406.47

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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.