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Finding the Fourth Proportional to 56,553.40, 84,827.40 and 19,109.80

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Solution

The fourth proportional to 56,553.40, 84,827.40 and 19,109.80 is: 28,663.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,553.40 : 84,827.40 = 19,109.80 : x
  2. Step 2: Convert to fraction form
    56,553.40/84,827.40 = 19,109.80/x
  3. Step 3: Cross multiply
    56,553.40x = 84,827.40 × 19,109.80
  4. Step 4: Simplify right side
    56,553.40x = 1,621,034,648.52
  5. Step 5: Solve for x
    x = 1,621,034,648.52/56,553.40
  6. Step 6: Final answer
    x = 28,663.79

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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.