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Finding the Fourth Proportional to 70,953.90, 106,330.68 and 39,377.94

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Solution

The fourth proportional to 70,953.90, 106,330.68 and 39,377.94 is: 59,011.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,953.90 : 106,330.68 = 39,377.94 : x
  2. Step 2: Convert to fraction form
    70,953.90/106,330.68 = 39,377.94/x
  3. Step 3: Cross multiply
    70,953.90x = 106,330.68 × 39,377.94
  4. Step 4: Simplify right side
    70,953.90x = 4,187,083,137.20
  5. Step 5: Solve for x
    x = 4,187,083,137.20/70,953.90
  6. Step 6: Final answer
    x = 59,011.32

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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.