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Finding the Fourth Proportional to 66,188.52, 91,305.93 and 40,994.28

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Solution

The fourth proportional to 66,188.52, 91,305.93 and 40,994.28 is: 56,550.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,188.52 : 91,305.93 = 40,994.28 : x
  2. Step 2: Convert to fraction form
    66,188.52/91,305.93 = 40,994.28/x
  3. Step 3: Cross multiply
    66,188.52x = 91,305.93 × 40,994.28
  4. Step 4: Simplify right side
    66,188.52x = 3,743,020,860.08
  5. Step 5: Solve for x
    x = 3,743,020,860.08/66,188.52
  6. Step 6: Final answer
    x = 56,550.91

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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.