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Finding the Fourth Proportional to 64,572, 96,858 and 20,796

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Solution

The fourth proportional to 64,572, 96,858 and 20,796 is: 31,194

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,572 : 96,858 = 20,796 : x
  2. Step 2: Convert to fraction form
    64,572/96,858 = 20,796/x
  3. Step 3: Cross multiply
    64,572x = 96,858 × 20,796
  4. Step 4: Simplify right side
    64,572x = 2,014,258,968
  5. Step 5: Solve for x
    x = 2,014,258,968/64,572
  6. Step 6: Final answer
    x = 31,194

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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.