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Finding the Fourth Proportional to 73,436.45, 101,342.90 and 39,902.45

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Solution

The fourth proportional to 73,436.45, 101,342.90 and 39,902.45 is: 55,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,436.45 : 101,342.90 = 39,902.45 : x
  2. Step 2: Convert to fraction form
    73,436.45/101,342.90 = 39,902.45/x
  3. Step 3: Cross multiply
    73,436.45x = 101,342.90 × 39,902.45
  4. Step 4: Simplify right side
    73,436.45x = 4,043,829,293.88
  5. Step 5: Solve for x
    x = 4,043,829,293.88/73,436.45
  6. Step 6: Final answer
    x = 55,065.70

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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.