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Finding the Fourth Proportional to 64,879.20, 89,533.32 and 35,071.20

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Solution

The fourth proportional to 64,879.20, 89,533.32 and 35,071.20 is: 48,398.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.20 : 89,533.32 = 35,071.20 : x
  2. Step 2: Convert to fraction form
    64,879.20/89,533.32 = 35,071.20/x
  3. Step 3: Cross multiply
    64,879.20x = 89,533.32 × 35,071.20
  4. Step 4: Simplify right side
    64,879.20x = 3,140,040,972.38
  5. Step 5: Solve for x
    x = 3,140,040,972.38/64,879.20
  6. Step 6: Final answer
    x = 48,398.27

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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.