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Finding the Fourth Proportional to 101,393.91, 139,913.60 and 58,955.31

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Solution

The fourth proportional to 101,393.91, 139,913.60 and 58,955.31 is: 81,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,393.91 : 139,913.60 = 58,955.31 : x
  2. Step 2: Convert to fraction form
    101,393.91/139,913.60 = 58,955.31/x
  3. Step 3: Cross multiply
    101,393.91x = 139,913.60 × 58,955.31
  4. Step 4: Simplify right side
    101,393.91x = 8,248,649,366.44
  5. Step 5: Solve for x
    x = 8,248,649,366.44/101,393.91
  6. Step 6: Final answer
    x = 81,352.51

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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.