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Finding the Fourth Proportional to 70,047.90, 104,392.43 and 67,806.36

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Solution

The fourth proportional to 70,047.90, 104,392.43 and 67,806.36 is: 101,051.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,047.90 : 104,392.43 = 67,806.36 : x
  2. Step 2: Convert to fraction form
    70,047.90/104,392.43 = 67,806.36/x
  3. Step 3: Cross multiply
    70,047.90x = 104,392.43 × 67,806.36
  4. Step 4: Simplify right side
    70,047.90x = 7,078,470,350.82
  5. Step 5: Solve for x
    x = 7,078,470,350.82/70,047.90
  6. Step 6: Final answer
    x = 101,051.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.