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Finding the Fourth Proportional to 101,032.32, 139,431.60 and 58,605.60

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Solution

The fourth proportional to 101,032.32, 139,431.60 and 58,605.60 is: 80,879.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,032.32 : 139,431.60 = 58,605.60 : x
  2. Step 2: Convert to fraction form
    101,032.32/139,431.60 = 58,605.60/x
  3. Step 3: Cross multiply
    101,032.32x = 139,431.60 × 58,605.60
  4. Step 4: Simplify right side
    101,032.32x = 8,171,472,576.96
  5. Step 5: Solve for x
    x = 8,171,472,576.96/101,032.32
  6. Step 6: Final answer
    x = 80,879.79

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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.