Home / 45,101.88-67,661.28-13,929.84

Finding the Fourth Proportional to 45,101.88, 67,661.28 and 13,929.84

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Solution

The fourth proportional to 45,101.88, 67,661.28 and 13,929.84 is: 20,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,101.88 : 67,661.28 = 13,929.84 : x
  2. Step 2: Convert to fraction form
    45,101.88/67,661.28 = 13,929.84/x
  3. Step 3: Cross multiply
    45,101.88x = 67,661.28 × 13,929.84
  4. Step 4: Simplify right side
    45,101.88x = 942,510,804.60
  5. Step 5: Solve for x
    x = 942,510,804.60/45,101.88
  6. Step 6: Final answer
    x = 20,897.37

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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.