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Finding the Fourth Proportional to 64,929.62, 89,604 and 38,091.44

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Solution

The fourth proportional to 64,929.62, 89,604 and 38,091.44 is: 52,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,929.62 : 89,604 = 38,091.44 : x
  2. Step 2: Convert to fraction form
    64,929.62/89,604 = 38,091.44/x
  3. Step 3: Cross multiply
    64,929.62x = 89,604 × 38,091.44
  4. Step 4: Simplify right side
    64,929.62x = 3,413,145,389.76
  5. Step 5: Solve for x
    x = 3,413,145,389.76/64,929.62
  6. Step 6: Final answer
    x = 52,566.85

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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.