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Finding the Fourth Proportional to 72,736.30, 100,389.90 and 45,525.02

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Solution

The fourth proportional to 72,736.30, 100,389.90 and 45,525.02 is: 62,833.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,736.30 : 100,389.90 = 45,525.02 : x
  2. Step 2: Convert to fraction form
    72,736.30/100,389.90 = 45,525.02/x
  3. Step 3: Cross multiply
    72,736.30x = 100,389.90 × 45,525.02
  4. Step 4: Simplify right side
    72,736.30x = 4,570,252,205.30
  5. Step 5: Solve for x
    x = 4,570,252,205.30/72,736.30
  6. Step 6: Final answer
    x = 62,833.17

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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.