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Finding the Fourth Proportional to 64,985.58, 97,481.84 and 20,615.88

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Solution

The fourth proportional to 64,985.58, 97,481.84 and 20,615.88 is: 30,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,985.58 : 97,481.84 = 20,615.88 : x
  2. Step 2: Convert to fraction form
    64,985.58/97,481.84 = 20,615.88/x
  3. Step 3: Cross multiply
    64,985.58x = 97,481.84 × 20,615.88
  4. Step 4: Simplify right side
    64,985.58x = 2,009,673,812.54
  5. Step 5: Solve for x
    x = 2,009,673,812.54/64,985.58
  6. Step 6: Final answer
    x = 30,924.92

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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.