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Finding the Fourth Proportional to 66,662.55, 92,003.72 and 40,836.51

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Solution

The fourth proportional to 66,662.55, 92,003.72 and 40,836.51 is: 56,360.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,662.55 : 92,003.72 = 40,836.51 : x
  2. Step 2: Convert to fraction form
    66,662.55/92,003.72 = 40,836.51/x
  3. Step 3: Cross multiply
    66,662.55x = 92,003.72 × 40,836.51
  4. Step 4: Simplify right side
    66,662.55x = 3,757,110,627.63
  5. Step 5: Solve for x
    x = 3,757,110,627.63/66,662.55
  6. Step 6: Final answer
    x = 56,360.14

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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.