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Finding the Fourth Proportional to 72,551.10, 100,222.47 and 55,996.86

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Solution

The fourth proportional to 72,551.10, 100,222.47 and 55,996.86 is: 77,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,551.10 : 100,222.47 = 55,996.86 : x
  2. Step 2: Convert to fraction form
    72,551.10/100,222.47 = 55,996.86/x
  3. Step 3: Cross multiply
    72,551.10x = 100,222.47 × 55,996.86
  4. Step 4: Simplify right side
    72,551.10x = 5,612,143,621.44
  5. Step 5: Solve for x
    x = 5,612,143,621.44/72,551.10
  6. Step 6: Final answer
    x = 77,354.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.