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Finding the Fourth Proportional to 60,511, 90,766.52 and 18,958

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Solution

The fourth proportional to 60,511, 90,766.52 and 18,958 is: 28,437.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,511 : 90,766.52 = 18,958 : x
  2. Step 2: Convert to fraction form
    60,511/90,766.52 = 18,958/x
  3. Step 3: Cross multiply
    60,511x = 90,766.52 × 18,958
  4. Step 4: Simplify right side
    60,511x = 1,720,751,686.16
  5. Step 5: Solve for x
    x = 1,720,751,686.16/60,511
  6. Step 6: Final answer
    x = 28,437.01

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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.