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Finding the Fourth Proportional to 101,803.71, 140,484.36 and 56,481.21

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Solution

The fourth proportional to 101,803.71, 140,484.36 and 56,481.21 is: 77,941.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,803.71 : 140,484.36 = 56,481.21 : x
  2. Step 2: Convert to fraction form
    101,803.71/140,484.36 = 56,481.21/x
  3. Step 3: Cross multiply
    101,803.71x = 140,484.36 × 56,481.21
  4. Step 4: Simplify right side
    101,803.71x = 7,934,726,638.88
  5. Step 5: Solve for x
    x = 7,934,726,638.88/101,803.71
  6. Step 6: Final answer
    x = 77,941.43

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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.