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Finding the Fourth Proportional to 56,718.99, 85,087.71 and 19,282.41

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Solution

The fourth proportional to 56,718.99, 85,087.71 and 19,282.41 is: 28,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,718.99 : 85,087.71 = 19,282.41 : x
  2. Step 2: Convert to fraction form
    56,718.99/85,087.71 = 19,282.41/x
  3. Step 3: Cross multiply
    56,718.99x = 85,087.71 × 19,282.41
  4. Step 4: Simplify right side
    56,718.99x = 1,640,696,110.18
  5. Step 5: Solve for x
    x = 1,640,696,110.18/56,718.99
  6. Step 6: Final answer
    x = 28,926.75

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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.