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Finding the Fourth Proportional to 60,138, 90,204.26 and 15,763.77

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Solution

The fourth proportional to 60,138, 90,204.26 and 15,763.77 is: 23,644.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,138 : 90,204.26 = 15,763.77 : x
  2. Step 2: Convert to fraction form
    60,138/90,204.26 = 15,763.77/x
  3. Step 3: Cross multiply
    60,138x = 90,204.26 × 15,763.77
  4. Step 4: Simplify right side
    60,138x = 1,421,959,128.84
  5. Step 5: Solve for x
    x = 1,421,959,128.84/60,138
  6. Step 6: Final answer
    x = 23,644.94

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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.