Home / 64,878.18-89,516.57-36,578.40

Finding the Fourth Proportional to 64,878.18, 89,516.57 and 36,578.40

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Solution

The fourth proportional to 64,878.18, 89,516.57 and 36,578.40 is: 50,469.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878.18 : 89,516.57 = 36,578.40 : x
  2. Step 2: Convert to fraction form
    64,878.18/89,516.57 = 36,578.40/x
  3. Step 3: Cross multiply
    64,878.18x = 89,516.57 × 36,578.40
  4. Step 4: Simplify right side
    64,878.18x = 3,274,372,904.09
  5. Step 5: Solve for x
    x = 3,274,372,904.09/64,878.18
  6. Step 6: Final answer
    x = 50,469.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.