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Finding the Fourth Proportional to 70,953.83, 106,218.24 and 68,430.39

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Solution

The fourth proportional to 70,953.83, 106,218.24 and 68,430.39 is: 102,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,953.83 : 106,218.24 = 68,430.39 : x
  2. Step 2: Convert to fraction form
    70,953.83/106,218.24 = 68,430.39/x
  3. Step 3: Cross multiply
    70,953.83x = 106,218.24 × 68,430.39
  4. Step 4: Simplify right side
    70,953.83x = 7,268,555,246.16
  5. Step 5: Solve for x
    x = 7,268,555,246.16/70,953.83
  6. Step 6: Final answer
    x = 102,440.63

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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.