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Finding the Fourth Proportional to 70,968.47, 106,453.10 and 21,048.94

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Solution

The fourth proportional to 70,968.47, 106,453.10 and 21,048.94 is: 31,573.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,968.47 : 106,453.10 = 21,048.94 : x
  2. Step 2: Convert to fraction form
    70,968.47/106,453.10 = 21,048.94/x
  3. Step 3: Cross multiply
    70,968.47x = 106,453.10 × 21,048.94
  4. Step 4: Simplify right side
    70,968.47x = 2,240,724,712.20
  5. Step 5: Solve for x
    x = 2,240,724,712.20/70,968.47
  6. Step 6: Final answer
    x = 31,573.53

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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.