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Finding the Fourth Proportional to 69,408.76, 104,545.51 and 64,542.28

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Solution

The fourth proportional to 69,408.76, 104,545.51 and 64,542.28 is: 97,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,408.76 : 104,545.51 = 64,542.28 : x
  2. Step 2: Convert to fraction form
    69,408.76/104,545.51 = 64,542.28/x
  3. Step 3: Cross multiply
    69,408.76x = 104,545.51 × 64,542.28
  4. Step 4: Simplify right side
    69,408.76x = 6,747,605,579.16
  5. Step 5: Solve for x
    x = 6,747,605,579.16/69,408.76
  6. Step 6: Final answer
    x = 97,215.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.