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Finding the Fourth Proportional to 66,042.81, 91,129.41 and 37,743.03

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Solution

The fourth proportional to 66,042.81, 91,129.41 and 37,743.03 is: 52,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.81 : 91,129.41 = 37,743.03 : x
  2. Step 2: Convert to fraction form
    66,042.81/91,129.41 = 37,743.03/x
  3. Step 3: Cross multiply
    66,042.81x = 91,129.41 × 37,743.03
  4. Step 4: Simplify right side
    66,042.81x = 3,439,500,055.51
  5. Step 5: Solve for x
    x = 3,439,500,055.51/66,042.81
  6. Step 6: Final answer
    x = 52,079.86

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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.