Home / 45,403.84-67,991.52-28,713.28

Finding the Fourth Proportional to 45,403.84, 67,991.52 and 28,713.28

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Solution

The fourth proportional to 45,403.84, 67,991.52 and 28,713.28 is: 42,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,403.84 : 67,991.52 = 28,713.28 : x
  2. Step 2: Convert to fraction form
    45,403.84/67,991.52 = 28,713.28/x
  3. Step 3: Cross multiply
    45,403.84x = 67,991.52 × 28,713.28
  4. Step 4: Simplify right side
    45,403.84x = 1,952,259,551.39
  5. Step 5: Solve for x
    x = 1,952,259,551.39/45,403.84
  6. Step 6: Final answer
    x = 42,997.67

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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.