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Finding the Fourth Proportional to 60,508, 90,762 and 18,955

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Solution

The fourth proportional to 60,508, 90,762 and 18,955 is: 28,432.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,508 : 90,762 = 18,955 : x
  2. Step 2: Convert to fraction form
    60,508/90,762 = 18,955/x
  3. Step 3: Cross multiply
    60,508x = 90,762 × 18,955
  4. Step 4: Simplify right side
    60,508x = 1,720,393,710
  5. Step 5: Solve for x
    x = 1,720,393,710/60,508
  6. Step 6: Final answer
    x = 28,432.50

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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.