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Finding the Fourth Proportional to 56,581, 84,910.38 and 19,645

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Solution

The fourth proportional to 56,581, 84,910.38 and 19,645 is: 29,481.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,581 : 84,910.38 = 19,645 : x
  2. Step 2: Convert to fraction form
    56,581/84,910.38 = 19,645/x
  3. Step 3: Cross multiply
    56,581x = 84,910.38 × 19,645
  4. Step 4: Simplify right side
    56,581x = 1,668,064,415.10
  5. Step 5: Solve for x
    x = 1,668,064,415.10/56,581
  6. Step 6: Final answer
    x = 29,481.00

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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.