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Finding the Fourth Proportional to 72,760.66, 100,400.73 and 45,893.02

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Solution

The fourth proportional to 72,760.66, 100,400.73 and 45,893.02 is: 63,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,760.66 : 100,400.73 = 45,893.02 : x
  2. Step 2: Convert to fraction form
    72,760.66/100,400.73 = 45,893.02/x
  3. Step 3: Cross multiply
    72,760.66x = 100,400.73 × 45,893.02
  4. Step 4: Simplify right side
    72,760.66x = 4,607,692,709.90
  5. Step 5: Solve for x
    x = 4,607,692,709.90/72,760.66
  6. Step 6: Final answer
    x = 63,326.70

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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.