Home / 66,665.23-91,994.79-37,991.61

Finding the Fourth Proportional to 66,665.23, 91,994.79 and 37,991.61

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Solution

The fourth proportional to 66,665.23, 91,994.79 and 37,991.61 is: 52,426.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,665.23 : 91,994.79 = 37,991.61 : x
  2. Step 2: Convert to fraction form
    66,665.23/91,994.79 = 37,991.61/x
  3. Step 3: Cross multiply
    66,665.23x = 91,994.79 × 37,991.61
  4. Step 4: Simplify right side
    66,665.23x = 3,495,029,853.74
  5. Step 5: Solve for x
    x = 3,495,029,853.74/66,665.23
  6. Step 6: Final answer
    x = 52,426.58

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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.