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Finding the Fourth Proportional to 115,477, 159,358.76 and 62,485

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Solution

The fourth proportional to 115,477, 159,358.76 and 62,485 is: 86,229.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,477 : 159,358.76 = 62,485 : x
  2. Step 2: Convert to fraction form
    115,477/159,358.76 = 62,485/x
  3. Step 3: Cross multiply
    115,477x = 159,358.76 × 62,485
  4. Step 4: Simplify right side
    115,477x = 9,957,532,118.60
  5. Step 5: Solve for x
    x = 9,957,532,118.60/115,477
  6. Step 6: Final answer
    x = 86,229.57

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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.