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Finding the Fourth Proportional to 85,520.70, 118,018.74 and 47,794.95

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Solution

The fourth proportional to 85,520.70, 118,018.74 and 47,794.95 is: 65,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520.70 : 118,018.74 = 47,794.95 : x
  2. Step 2: Convert to fraction form
    85,520.70/118,018.74 = 47,794.95/x
  3. Step 3: Cross multiply
    85,520.70x = 118,018.74 × 47,794.95
  4. Step 4: Simplify right side
    85,520.70x = 5,640,699,777.36
  5. Step 5: Solve for x
    x = 5,640,699,777.36/85,520.70
  6. Step 6: Final answer
    x = 65,957.13

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1.5x scale

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.