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Finding the Fourth Proportional to 66,312.56, 91,511.28 and 36,504.56

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Solution

The fourth proportional to 66,312.56, 91,511.28 and 36,504.56 is: 50,376.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,312.56 : 91,511.28 = 36,504.56 : x
  2. Step 2: Convert to fraction form
    66,312.56/91,511.28 = 36,504.56/x
  3. Step 3: Cross multiply
    66,312.56x = 91,511.28 × 36,504.56
  4. Step 4: Simplify right side
    66,312.56x = 3,340,579,011.44
  5. Step 5: Solve for x
    x = 3,340,579,011.44/66,312.56
  6. Step 6: Final answer
    x = 50,376.26

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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.