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Finding the Fourth Proportional to 48,513.95, 72,743.24 and 18,915.63

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Solution

The fourth proportional to 48,513.95, 72,743.24 and 18,915.63 is: 28,362.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,513.95 : 72,743.24 = 18,915.63 : x
  2. Step 2: Convert to fraction form
    48,513.95/72,743.24 = 18,915.63/x
  3. Step 3: Cross multiply
    48,513.95x = 72,743.24 × 18,915.63
  4. Step 4: Simplify right side
    48,513.95x = 1,375,984,118.26
  5. Step 5: Solve for x
    x = 1,375,984,118.26/48,513.95
  6. Step 6: Final answer
    x = 28,362.65

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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.