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Finding the Fourth Proportional to 29,399.78, 44,077.80 and 12,756.71

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Solution

The fourth proportional to 29,399.78, 44,077.80 and 12,756.71 is: 19,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,399.78 : 44,077.80 = 12,756.71 : x
  2. Step 2: Convert to fraction form
    29,399.78/44,077.80 = 12,756.71/x
  3. Step 3: Cross multiply
    29,399.78x = 44,077.80 × 12,756.71
  4. Step 4: Simplify right side
    29,399.78x = 562,287,712.04
  5. Step 5: Solve for x
    x = 562,287,712.04/29,399.78
  6. Step 6: Final answer
    x = 19,125.58

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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.