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Finding the Fourth Proportional to 66,919.94, 92,365.68 and 45,445.55

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Solution

The fourth proportional to 66,919.94, 92,365.68 and 45,445.55 is: 62,725.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,919.94 : 92,365.68 = 45,445.55 : x
  2. Step 2: Convert to fraction form
    66,919.94/92,365.68 = 45,445.55/x
  3. Step 3: Cross multiply
    66,919.94x = 92,365.68 × 45,445.55
  4. Step 4: Simplify right side
    66,919.94x = 4,197,608,666.90
  5. Step 5: Solve for x
    x = 4,197,608,666.90/66,919.94
  6. Step 6: Final answer
    x = 62,725.83

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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.