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Finding the Fourth Proportional to 72,402.47, 108,644.48 and 56,563.05

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Solution

The fourth proportional to 72,402.47, 108,644.48 and 56,563.05 is: 84,876.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,402.47 : 108,644.48 = 56,563.05 : x
  2. Step 2: Convert to fraction form
    72,402.47/108,644.48 = 56,563.05/x
  3. Step 3: Cross multiply
    72,402.47x = 108,644.48 × 56,563.05
  4. Step 4: Simplify right side
    72,402.47x = 6,145,263,154.46
  5. Step 5: Solve for x
    x = 6,145,263,154.46/72,402.47
  6. Step 6: Final answer
    x = 84,876.43

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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.