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Finding the Fourth Proportional to 66,197.63, 91,356.98 and 37,128.71

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Solution

The fourth proportional to 66,197.63, 91,356.98 and 37,128.71 is: 51,240.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,197.63 : 91,356.98 = 37,128.71 : x
  2. Step 2: Convert to fraction form
    66,197.63/91,356.98 = 37,128.71/x
  3. Step 3: Cross multiply
    66,197.63x = 91,356.98 × 37,128.71
  4. Step 4: Simplify right side
    66,197.63x = 3,391,966,174.47
  5. Step 5: Solve for x
    x = 3,391,966,174.47/66,197.63
  6. Step 6: Final answer
    x = 51,240.00

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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.