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Finding the Fourth Proportional to 64,883.21, 89,538.90 and 38,020.37

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Solution

The fourth proportional to 64,883.21, 89,538.90 and 38,020.37 is: 52,468.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,883.21 : 89,538.90 = 38,020.37 : x
  2. Step 2: Convert to fraction form
    64,883.21/89,538.90 = 38,020.37/x
  3. Step 3: Cross multiply
    64,883.21x = 89,538.90 × 38,020.37
  4. Step 4: Simplify right side
    64,883.21x = 3,404,302,107.39
  5. Step 5: Solve for x
    x = 3,404,302,107.39/64,883.21
  6. Step 6: Final answer
    x = 52,468.15

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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.