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Finding the Fourth Proportional to 64,910.99, 97,370.03 and 20,534.45

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Solution

The fourth proportional to 64,910.99, 97,370.03 and 20,534.45 is: 30,802.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,910.99 : 97,370.03 = 20,534.45 : x
  2. Step 2: Convert to fraction form
    64,910.99/97,370.03 = 20,534.45/x
  3. Step 3: Cross multiply
    64,910.99x = 97,370.03 × 20,534.45
  4. Step 4: Simplify right side
    64,910.99x = 1,999,439,577.02
  5. Step 5: Solve for x
    x = 1,999,439,577.02/64,910.99
  6. Step 6: Final answer
    x = 30,802.79

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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.