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Finding the Fourth Proportional to 66,284.72, 91,474.60 and 36,071.68

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Solution

The fourth proportional to 66,284.72, 91,474.60 and 36,071.68 is: 49,779.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,284.72 : 91,474.60 = 36,071.68 : x
  2. Step 2: Convert to fraction form
    66,284.72/91,474.60 = 36,071.68/x
  3. Step 3: Cross multiply
    66,284.72x = 91,474.60 × 36,071.68
  4. Step 4: Simplify right side
    66,284.72x = 3,299,642,499.33
  5. Step 5: Solve for x
    x = 3,299,642,499.33/66,284.72
  6. Step 6: Final answer
    x = 49,779.84

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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.