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Finding the Fourth Proportional to 56,486, 84,729 and 19,550

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Solution

The fourth proportional to 56,486, 84,729 and 19,550 is: 29,325

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,486 : 84,729 = 19,550 : x
  2. Step 2: Convert to fraction form
    56,486/84,729 = 19,550/x
  3. Step 3: Cross multiply
    56,486x = 84,729 × 19,550
  4. Step 4: Simplify right side
    56,486x = 1,656,451,950
  5. Step 5: Solve for x
    x = 1,656,451,950/56,486
  6. Step 6: Final answer
    x = 29,325

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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.