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Finding the Fourth Proportional to 73,454.78, 101,367.54 and 39,920.78

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Solution

The fourth proportional to 73,454.78, 101,367.54 and 39,920.78 is: 55,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,454.78 : 101,367.54 = 39,920.78 : x
  2. Step 2: Convert to fraction form
    73,454.78/101,367.54 = 39,920.78/x
  3. Step 3: Cross multiply
    73,454.78x = 101,367.54 × 39,920.78
  4. Step 4: Simplify right side
    73,454.78x = 4,046,671,263.48
  5. Step 5: Solve for x
    x = 4,046,671,263.48/73,454.78
  6. Step 6: Final answer
    x = 55,090.65

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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.