Home / 55,431.60-83,180.18-20,395.84

Finding the Fourth Proportional to 55,431.60, 83,180.18 and 20,395.84

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Solution

The fourth proportional to 55,431.60, 83,180.18 and 20,395.84 is: 30,605.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,431.60 : 83,180.18 = 20,395.84 : x
  2. Step 2: Convert to fraction form
    55,431.60/83,180.18 = 20,395.84/x
  3. Step 3: Cross multiply
    55,431.60x = 83,180.18 × 20,395.84
  4. Step 4: Simplify right side
    55,431.60x = 1,696,529,642.45
  5. Step 5: Solve for x
    x = 1,696,529,642.45/55,431.60
  6. Step 6: Final answer
    x = 30,605.82

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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.