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Finding the Fourth Proportional to 70,649.58, 106,010.72 and 39,053.78

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Solution

The fourth proportional to 70,649.58, 106,010.72 and 39,053.78 is: 58,600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,649.58 : 106,010.72 = 39,053.78 : x
  2. Step 2: Convert to fraction form
    70,649.58/106,010.72 = 39,053.78/x
  3. Step 3: Cross multiply
    70,649.58x = 106,010.72 × 39,053.78
  4. Step 4: Simplify right side
    70,649.58x = 4,140,119,336.52
  5. Step 5: Solve for x
    x = 4,140,119,336.52/70,649.58
  6. Step 6: Final answer
    x = 58,600.76

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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.