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Finding the Fourth Proportional to 91,283.25, 136,924.89 and 28,953.75

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Solution

The fourth proportional to 91,283.25, 136,924.89 and 28,953.75 is: 43,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,283.25 : 136,924.89 = 28,953.75 : x
  2. Step 2: Convert to fraction form
    91,283.25/136,924.89 = 28,953.75/x
  3. Step 3: Cross multiply
    91,283.25x = 136,924.89 × 28,953.75
  4. Step 4: Simplify right side
    91,283.25x = 3,964,489,033.84
  5. Step 5: Solve for x
    x = 3,964,489,033.84/91,283.25
  6. Step 6: Final answer
    x = 43,430.63

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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.