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Finding the Fourth Proportional to 60,855, 91,282.50 and 19,302

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Solution

The fourth proportional to 60,855, 91,282.50 and 19,302 is: 28,953

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,855 : 91,282.50 = 19,302 : x
  2. Step 2: Convert to fraction form
    60,855/91,282.50 = 19,302/x
  3. Step 3: Cross multiply
    60,855x = 91,282.50 × 19,302
  4. Step 4: Simplify right side
    60,855x = 1,761,934,815
  5. Step 5: Solve for x
    x = 1,761,934,815/60,855
  6. Step 6: Final answer
    x = 28,953

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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.