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Finding the Fourth Proportional to 64,745.66, 89,347.62 and 36,065.21

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Solution

The fourth proportional to 64,745.66, 89,347.62 and 36,065.21 is: 49,769.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,745.66 : 89,347.62 = 36,065.21 : x
  2. Step 2: Convert to fraction form
    64,745.66/89,347.62 = 36,065.21/x
  3. Step 3: Cross multiply
    64,745.66x = 89,347.62 × 36,065.21
  4. Step 4: Simplify right side
    64,745.66x = 3,222,340,678.30
  5. Step 5: Solve for x
    x = 3,222,340,678.30/64,745.66
  6. Step 6: Final answer
    x = 49,769.22

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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.