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Finding the Fourth Proportional to 66,648.94, 99,973.39 and 26,685.91

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Solution

The fourth proportional to 66,648.94, 99,973.39 and 26,685.91 is: 40,028.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,648.94 : 99,973.39 = 26,685.91 : x
  2. Step 2: Convert to fraction form
    66,648.94/99,973.39 = 26,685.91/x
  3. Step 3: Cross multiply
    66,648.94x = 99,973.39 × 26,685.91
  4. Step 4: Simplify right side
    66,648.94x = 2,667,880,887.93
  5. Step 5: Solve for x
    x = 2,667,880,887.93/66,648.94
  6. Step 6: Final answer
    x = 40,028.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.