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Finding the Fourth Proportional to 66,027.88, 91,113.06 and 36,219.88

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Solution

The fourth proportional to 66,027.88, 91,113.06 and 36,219.88 is: 49,980.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,027.88 : 91,113.06 = 36,219.88 : x
  2. Step 2: Convert to fraction form
    66,027.88/91,113.06 = 36,219.88/x
  3. Step 3: Cross multiply
    66,027.88x = 91,113.06 × 36,219.88
  4. Step 4: Simplify right side
    66,027.88x = 3,300,104,099.63
  5. Step 5: Solve for x
    x = 3,300,104,099.63/66,027.88
  6. Step 6: Final answer
    x = 49,980.46

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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.