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Finding the Fourth Proportional to 64,966.20, 89,668.20 and 38,109.84

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Solution

The fourth proportional to 64,966.20, 89,668.20 and 38,109.84 is: 52,600.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,966.20 : 89,668.20 = 38,109.84 : x
  2. Step 2: Convert to fraction form
    64,966.20/89,668.20 = 38,109.84/x
  3. Step 3: Cross multiply
    64,966.20x = 89,668.20 × 38,109.84
  4. Step 4: Simplify right side
    64,966.20x = 3,417,240,755.09
  5. Step 5: Solve for x
    x = 3,417,240,755.09/64,966.20
  6. Step 6: Final answer
    x = 52,600.29

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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.