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Finding the Fourth Proportional to 72,964, 109,446 and 17,560

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Solution

The fourth proportional to 72,964, 109,446 and 17,560 is: 26,340

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,964 : 109,446 = 17,560 : x
  2. Step 2: Convert to fraction form
    72,964/109,446 = 17,560/x
  3. Step 3: Cross multiply
    72,964x = 109,446 × 17,560
  4. Step 4: Simplify right side
    72,964x = 1,921,871,760
  5. Step 5: Solve for x
    x = 1,921,871,760/72,964
  6. Step 6: Final answer
    x = 26,340

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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.