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Finding the Fourth Proportional to 64,966.84, 89,660.55 and 39,467.63

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Solution

The fourth proportional to 64,966.84, 89,660.55 and 39,467.63 is: 54,469.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,966.84 : 89,660.55 = 39,467.63 : x
  2. Step 2: Convert to fraction form
    64,966.84/89,660.55 = 39,467.63/x
  3. Step 3: Cross multiply
    64,966.84x = 89,660.55 × 39,467.63
  4. Step 4: Simplify right side
    64,966.84x = 3,538,689,785.15
  5. Step 5: Solve for x
    x = 3,538,689,785.15/64,966.84
  6. Step 6: Final answer
    x = 54,469.17

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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.