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Finding the Fourth Proportional to 56,713.29, 85,028.19 and 19,263.29

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Solution

The fourth proportional to 56,713.29, 85,028.19 and 19,263.29 is: 28,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,713.29 : 85,028.19 = 19,263.29 : x
  2. Step 2: Convert to fraction form
    56,713.29/85,028.19 = 19,263.29/x
  3. Step 3: Cross multiply
    56,713.29x = 85,028.19 × 19,263.29
  4. Step 4: Simplify right side
    56,713.29x = 1,637,922,503.62
  5. Step 5: Solve for x
    x = 1,637,922,503.62/56,713.29
  6. Step 6: Final answer
    x = 28,880.75

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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.