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Finding the Fourth Proportional to 103,432.44, 142,733.44 and 57,491.85

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Solution

The fourth proportional to 103,432.44, 142,733.44 and 57,491.85 is: 79,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.44 : 142,733.44 = 57,491.85 : x
  2. Step 2: Convert to fraction form
    103,432.44/142,733.44 = 57,491.85/x
  3. Step 3: Cross multiply
    103,432.44x = 142,733.44 × 57,491.85
  4. Step 4: Simplify right side
    103,432.44x = 8,206,009,522.46
  5. Step 5: Solve for x
    x = 8,206,009,522.46/103,432.44
  6. Step 6: Final answer
    x = 79,336.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.