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Finding the Fourth Proportional to 66,460.21, 91,711.44 and 37,775.88

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Solution

The fourth proportional to 66,460.21, 91,711.44 and 37,775.88 is: 52,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,460.21 : 91,711.44 = 37,775.88 : x
  2. Step 2: Convert to fraction form
    66,460.21/91,711.44 = 37,775.88/x
  3. Step 3: Cross multiply
    66,460.21x = 91,711.44 × 37,775.88
  4. Step 4: Simplify right side
    66,460.21x = 3,464,480,352.07
  5. Step 5: Solve for x
    x = 3,464,480,352.07/66,460.21
  6. Step 6: Final answer
    x = 52,128.64

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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.