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Finding the Fourth Proportional to 39,999.88, 55,169.90 and 27,900.98

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Solution

The fourth proportional to 39,999.88, 55,169.90 and 27,900.98 is: 38,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,999.88 : 55,169.90 = 27,900.98 : x
  2. Step 2: Convert to fraction form
    39,999.88/55,169.90 = 27,900.98/x
  3. Step 3: Cross multiply
    39,999.88x = 55,169.90 × 27,900.98
  4. Step 4: Simplify right side
    39,999.88x = 1,539,294,345.46
  5. Step 5: Solve for x
    x = 1,539,294,345.46/39,999.88
  6. Step 6: Final answer
    x = 38,482.48

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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.