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Finding the Fourth Proportional to 64,830.88, 89,453.08 and 39,350.62

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Solution

The fourth proportional to 64,830.88, 89,453.08 and 39,350.62 is: 54,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,830.88 : 89,453.08 = 39,350.62 : x
  2. Step 2: Convert to fraction form
    64,830.88/89,453.08 = 39,350.62/x
  3. Step 3: Cross multiply
    64,830.88x = 89,453.08 × 39,350.62
  4. Step 4: Simplify right side
    64,830.88x = 3,520,034,556.38
  5. Step 5: Solve for x
    x = 3,520,034,556.38/64,830.88
  6. Step 6: Final answer
    x = 54,295.65

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1.5x scale

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.