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Finding the Fourth Proportional to 66,005.64, 91,078.56 and 37,320.48

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Solution

The fourth proportional to 66,005.64, 91,078.56 and 37,320.48 is: 51,497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.64 : 91,078.56 = 37,320.48 : x
  2. Step 2: Convert to fraction form
    66,005.64/91,078.56 = 37,320.48/x
  3. Step 3: Cross multiply
    66,005.64x = 91,078.56 × 37,320.48
  4. Step 4: Simplify right side
    66,005.64x = 3,399,095,576.91
  5. Step 5: Solve for x
    x = 3,399,095,576.91/66,005.64
  6. Step 6: Final answer
    x = 51,497.05

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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.