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Finding the Fourth Proportional to 64,922.70, 97,374.28 and 20,543.68

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Solution

The fourth proportional to 64,922.70, 97,374.28 and 20,543.68 is: 30,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,922.70 : 97,374.28 = 20,543.68 : x
  2. Step 2: Convert to fraction form
    64,922.70/97,374.28 = 20,543.68/x
  3. Step 3: Cross multiply
    64,922.70x = 97,374.28 × 20,543.68
  4. Step 4: Simplify right side
    64,922.70x = 2,000,426,048.55
  5. Step 5: Solve for x
    x = 2,000,426,048.55/64,922.70
  6. Step 6: Final answer
    x = 30,812.43

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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.