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Finding the Fourth Proportional to 72,998.25, 100,737.72 and 39,464.25

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Solution

The fourth proportional to 72,998.25, 100,737.72 and 39,464.25 is: 54,460.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,998.25 : 100,737.72 = 39,464.25 : x
  2. Step 2: Convert to fraction form
    72,998.25/100,737.72 = 39,464.25/x
  3. Step 3: Cross multiply
    72,998.25x = 100,737.72 × 39,464.25
  4. Step 4: Simplify right side
    72,998.25x = 3,975,538,566.51
  5. Step 5: Solve for x
    x = 3,975,538,566.51/72,998.25
  6. Step 6: Final answer
    x = 54,460.74

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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.