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Finding the Fourth Proportional to 66,309.63, 91,507.28 and 36,501.63

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Solution

The fourth proportional to 66,309.63, 91,507.28 and 36,501.63 is: 50,372.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309.63 : 91,507.28 = 36,501.63 : x
  2. Step 2: Convert to fraction form
    66,309.63/91,507.28 = 36,501.63/x
  3. Step 3: Cross multiply
    66,309.63x = 91,507.28 × 36,501.63
  4. Step 4: Simplify right side
    66,309.63x = 3,340,164,876.87
  5. Step 5: Solve for x
    x = 3,340,164,876.87/66,309.63
  6. Step 6: Final answer
    x = 50,372.24

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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.