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Finding the Fourth Proportional to 73,221.37, 109,809.88 and 31,101.06

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Solution

The fourth proportional to 73,221.37, 109,809.88 and 31,101.06 is: 46,642.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,221.37 : 109,809.88 = 31,101.06 : x
  2. Step 2: Convert to fraction form
    73,221.37/109,809.88 = 31,101.06/x
  3. Step 3: Cross multiply
    73,221.37x = 109,809.88 × 31,101.06
  4. Step 4: Simplify right side
    73,221.37x = 3,415,204,000.51
  5. Step 5: Solve for x
    x = 3,415,204,000.51/73,221.37
  6. Step 6: Final answer
    x = 46,642.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.