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Finding the Fourth Proportional to 64,974.46, 89,672.54 and 39,484.99

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Solution

The fourth proportional to 64,974.46, 89,672.54 and 39,484.99 is: 54,494.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,974.46 : 89,672.54 = 39,484.99 : x
  2. Step 2: Convert to fraction form
    64,974.46/89,672.54 = 39,484.99/x
  3. Step 3: Cross multiply
    64,974.46x = 89,672.54 × 39,484.99
  4. Step 4: Simplify right side
    64,974.46x = 3,540,719,147.75
  5. Step 5: Solve for x
    x = 3,540,719,147.75/64,974.46
  6. Step 6: Final answer
    x = 54,494.01

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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.