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Finding the Fourth Proportional to 64,388.54, 88,874.69 and 38,890.85

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Solution

The fourth proportional to 64,388.54, 88,874.69 and 38,890.85 is: 53,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,388.54 : 88,874.69 = 38,890.85 : x
  2. Step 2: Convert to fraction form
    64,388.54/88,874.69 = 38,890.85/x
  3. Step 3: Cross multiply
    64,388.54x = 88,874.69 × 38,890.85
  4. Step 4: Simplify right side
    64,388.54x = 3,456,411,598.76
  5. Step 5: Solve for x
    x = 3,456,411,598.76/64,388.54
  6. Step 6: Final answer
    x = 53,680.54

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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.