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Finding the Fourth Proportional to 85,532.36, 118,029.90 and 47,289.67

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Solution

The fourth proportional to 85,532.36, 118,029.90 and 47,289.67 is: 65,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,532.36 : 118,029.90 = 47,289.67 : x
  2. Step 2: Convert to fraction form
    85,532.36/118,029.90 = 47,289.67/x
  3. Step 3: Cross multiply
    85,532.36x = 118,029.90 × 47,289.67
  4. Step 4: Simplify right side
    85,532.36x = 5,581,594,726.06
  5. Step 5: Solve for x
    x = 5,581,594,726.06/85,532.36
  6. Step 6: Final answer
    x = 65,257.11

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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.