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Finding the Fourth Proportional to 64,666.47, 97,003.81 and 20,294.98

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Solution

The fourth proportional to 64,666.47, 97,003.81 and 20,294.98 is: 30,443.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,666.47 : 97,003.81 = 20,294.98 : x
  2. Step 2: Convert to fraction form
    64,666.47/97,003.81 = 20,294.98/x
  3. Step 3: Cross multiply
    64,666.47x = 97,003.81 × 20,294.98
  4. Step 4: Simplify right side
    64,666.47x = 1,968,690,090.63
  5. Step 5: Solve for x
    x = 1,968,690,090.63/64,666.47
  6. Step 6: Final answer
    x = 30,443.75

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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.