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Finding the Fourth Proportional to 60,779, 91,168.02 and 18,659

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Solution

The fourth proportional to 60,779, 91,168.02 and 18,659 is: 27,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,779 : 91,168.02 = 18,659 : x
  2. Step 2: Convert to fraction form
    60,779/91,168.02 = 18,659/x
  3. Step 3: Cross multiply
    60,779x = 91,168.02 × 18,659
  4. Step 4: Simplify right side
    60,779x = 1,701,104,085.18
  5. Step 5: Solve for x
    x = 1,701,104,085.18/60,779
  6. Step 6: Final answer
    x = 27,988.35

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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.