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Finding the Fourth Proportional to 39,999.50, 55,199.31 and 22,335.50

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Solution

The fourth proportional to 39,999.50, 55,199.31 and 22,335.50 is: 30,822.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,999.50 : 55,199.31 = 22,335.50 : x
  2. Step 2: Convert to fraction form
    39,999.50/55,199.31 = 22,335.50/x
  3. Step 3: Cross multiply
    39,999.50x = 55,199.31 × 22,335.50
  4. Step 4: Simplify right side
    39,999.50x = 1,232,904,188.51
  5. Step 5: Solve for x
    x = 1,232,904,188.51/39,999.50
  6. Step 6: Final answer
    x = 30,822.99

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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.