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Finding the Fourth Proportional to 72,998.63, 100,738.24 and 39,464.63

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Solution

The fourth proportional to 72,998.63, 100,738.24 and 39,464.63 is: 54,461.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,998.63 : 100,738.24 = 39,464.63 : x
  2. Step 2: Convert to fraction form
    72,998.63/100,738.24 = 39,464.63/x
  3. Step 3: Cross multiply
    72,998.63x = 100,738.24 × 39,464.63
  4. Step 4: Simplify right side
    72,998.63x = 3,975,596,766.10
  5. Step 5: Solve for x
    x = 3,975,596,766.10/72,998.63
  6. Step 6: Final answer
    x = 54,461.26

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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.