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Finding the Fourth Proportional to 50,978.53, 76,461.90 and 13,541.55

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Solution

The fourth proportional to 50,978.53, 76,461.90 and 13,541.55 is: 20,310.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,978.53 : 76,461.90 = 13,541.55 : x
  2. Step 2: Convert to fraction form
    50,978.53/76,461.90 = 13,541.55/x
  3. Step 3: Cross multiply
    50,978.53x = 76,461.90 × 13,541.55
  4. Step 4: Simplify right side
    50,978.53x = 1,035,412,641.95
  5. Step 5: Solve for x
    x = 1,035,412,641.95/50,978.53
  6. Step 6: Final answer
    x = 20,310.76

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1.5x scale

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.