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Finding the Fourth Proportional to 64,969.14, 89,661.02 and 45,855.03

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Solution

The fourth proportional to 64,969.14, 89,661.02 and 45,855.03 is: 63,282.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,969.14 : 89,661.02 = 45,855.03 : x
  2. Step 2: Convert to fraction form
    64,969.14/89,661.02 = 45,855.03/x
  3. Step 3: Cross multiply
    64,969.14x = 89,661.02 × 45,855.03
  4. Step 4: Simplify right side
    64,969.14x = 4,111,408,761.93
  5. Step 5: Solve for x
    x = 4,111,408,761.93/64,969.14
  6. Step 6: Final answer
    x = 63,282.49

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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.