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Finding the Fourth Proportional to 73,398.45, 101,290.37 and 39,864.45

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Solution

The fourth proportional to 73,398.45, 101,290.37 and 39,864.45 is: 55,013.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,398.45 : 101,290.37 = 39,864.45 : x
  2. Step 2: Convert to fraction form
    73,398.45/101,290.37 = 39,864.45/x
  3. Step 3: Cross multiply
    73,398.45x = 101,290.37 × 39,864.45
  4. Step 4: Simplify right side
    73,398.45x = 4,037,884,890.35
  5. Step 5: Solve for x
    x = 4,037,884,890.35/73,398.45
  6. Step 6: Final answer
    x = 55,013.22

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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.