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Finding the Fourth Proportional to 66,632.95, 91,893.94 and 55,284.47

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Solution

The fourth proportional to 66,632.95, 91,893.94 and 55,284.47 is: 76,243.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,632.95 : 91,893.94 = 55,284.47 : x
  2. Step 2: Convert to fraction form
    66,632.95/91,893.94 = 55,284.47/x
  3. Step 3: Cross multiply
    66,632.95x = 91,893.94 × 55,284.47
  4. Step 4: Simplify right side
    66,632.95x = 5,080,308,343.91
  5. Step 5: Solve for x
    x = 5,080,308,343.91/66,632.95
  6. Step 6: Final answer
    x = 76,243.19

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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.