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Finding the Fourth Proportional to 72,916, 109,374.08 and 17,512

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Solution

The fourth proportional to 72,916, 109,374.08 and 17,512 is: 26,268.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,916 : 109,374.08 = 17,512 : x
  2. Step 2: Convert to fraction form
    72,916/109,374.08 = 17,512/x
  3. Step 3: Cross multiply
    72,916x = 109,374.08 × 17,512
  4. Step 4: Simplify right side
    72,916x = 1,915,358,888.96
  5. Step 5: Solve for x
    x = 1,915,358,888.96/72,916
  6. Step 6: Final answer
    x = 26,268.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.