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Finding the Fourth Proportional to 64,745.38, 89,355.45 and 37,896.58

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Solution

The fourth proportional to 64,745.38, 89,355.45 and 37,896.58 is: 52,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,745.38 : 89,355.45 = 37,896.58 : x
  2. Step 2: Convert to fraction form
    64,745.38/89,355.45 = 37,896.58/x
  3. Step 3: Cross multiply
    64,745.38x = 89,355.45 × 37,896.58
  4. Step 4: Simplify right side
    64,745.38x = 3,386,265,959.36
  5. Step 5: Solve for x
    x = 3,386,265,959.36/64,745.38
  6. Step 6: Final answer
    x = 52,301.28

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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.