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Finding the Fourth Proportional to 64,984.68, 97,480.58 and 20,608.22

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Solution

The fourth proportional to 64,984.68, 97,480.58 and 20,608.22 is: 30,913.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,984.68 : 97,480.58 = 20,608.22 : x
  2. Step 2: Convert to fraction form
    64,984.68/97,480.58 = 20,608.22/x
  3. Step 3: Cross multiply
    64,984.68x = 97,480.58 × 20,608.22
  4. Step 4: Simplify right side
    64,984.68x = 2,008,901,379.03
  5. Step 5: Solve for x
    x = 2,008,901,379.03/64,984.68
  6. Step 6: Final answer
    x = 30,913.46

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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.