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Finding the Fourth Proportional to 101,274.30, 139,746.47 and 55,949.54

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Solution

The fourth proportional to 101,274.30, 139,746.47 and 55,949.54 is: 77,203.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,274.30 : 139,746.47 = 55,949.54 : x
  2. Step 2: Convert to fraction form
    101,274.30/139,746.47 = 55,949.54/x
  3. Step 3: Cross multiply
    101,274.30x = 139,746.47 × 55,949.54
  4. Step 4: Simplify right side
    101,274.30x = 7,818,749,734.64
  5. Step 5: Solve for x
    x = 7,818,749,734.64/101,274.30
  6. Step 6: Final answer
    x = 77,203.69

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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.