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Finding the Fourth Proportional to 64,665.78, 97,014.15 and 20,292.45

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Solution

The fourth proportional to 64,665.78, 97,014.15 and 20,292.45 is: 30,443.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,665.78 : 97,014.15 = 20,292.45 : x
  2. Step 2: Convert to fraction form
    64,665.78/97,014.15 = 20,292.45/x
  3. Step 3: Cross multiply
    64,665.78x = 97,014.15 × 20,292.45
  4. Step 4: Simplify right side
    64,665.78x = 1,968,654,788.17
  5. Step 5: Solve for x
    x = 1,968,654,788.17/64,665.78
  6. Step 6: Final answer
    x = 30,443.53

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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.