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Finding the Fourth Proportional to 85,863.70, 118,491.82 and 48,137.95

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Solution

The fourth proportional to 85,863.70, 118,491.82 and 48,137.95 is: 66,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,863.70 : 118,491.82 = 48,137.95 : x
  2. Step 2: Convert to fraction form
    85,863.70/118,491.82 = 48,137.95/x
  3. Step 3: Cross multiply
    85,863.70x = 118,491.82 × 48,137.95
  4. Step 4: Simplify right side
    85,863.70x = 5,703,953,306.57
  5. Step 5: Solve for x
    x = 5,703,953,306.57/85,863.70
  6. Step 6: Final answer
    x = 66,430.32

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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.