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Finding the Fourth Proportional to 48,756.50, 73,134.75 and 11,820.50

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Solution

The fourth proportional to 48,756.50, 73,134.75 and 11,820.50 is: 17,730.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,756.50 : 73,134.75 = 11,820.50 : x
  2. Step 2: Convert to fraction form
    48,756.50/73,134.75 = 11,820.50/x
  3. Step 3: Cross multiply
    48,756.50x = 73,134.75 × 11,820.50
  4. Step 4: Simplify right side
    48,756.50x = 864,489,312.38
  5. Step 5: Solve for x
    x = 864,489,312.38/48,756.50
  6. Step 6: Final answer
    x = 17,730.75

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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.