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Finding the Fourth Proportional to 87,370.70, 120,570.93 and 49,644.95

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Solution

The fourth proportional to 87,370.70, 120,570.93 and 49,644.95 is: 68,509.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,370.70 : 120,570.93 = 49,644.95 : x
  2. Step 2: Convert to fraction form
    87,370.70/120,570.93 = 49,644.95/x
  3. Step 3: Cross multiply
    87,370.70x = 120,570.93 × 49,644.95
  4. Step 4: Simplify right side
    87,370.70x = 5,985,737,188.45
  5. Step 5: Solve for x
    x = 5,985,737,188.45/87,370.70
  6. Step 6: Final answer
    x = 68,509.67

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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.