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Finding the Fourth Proportional to 56,497, 84,745.50 and 19,561

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Solution

The fourth proportional to 56,497, 84,745.50 and 19,561 is: 29,341.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,497 : 84,745.50 = 19,561 : x
  2. Step 2: Convert to fraction form
    56,497/84,745.50 = 19,561/x
  3. Step 3: Cross multiply
    56,497x = 84,745.50 × 19,561
  4. Step 4: Simplify right side
    56,497x = 1,657,706,725.50
  5. Step 5: Solve for x
    x = 1,657,706,725.50/56,497
  6. Step 6: Final answer
    x = 29,341.50

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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.