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Finding the Fourth Proportional to 122,587, 183,880.51 and 39,481

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Solution

The fourth proportional to 122,587, 183,880.51 and 39,481 is: 59,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,587 : 183,880.51 = 39,481 : x
  2. Step 2: Convert to fraction form
    122,587/183,880.51 = 39,481/x
  3. Step 3: Cross multiply
    122,587x = 183,880.51 × 39,481
  4. Step 4: Simplify right side
    122,587x = 7,259,786,415.31
  5. Step 5: Solve for x
    x = 7,259,786,415.31/122,587
  6. Step 6: Final answer
    x = 59,221.50

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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.