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Finding the Fourth Proportional to 85,151.70, 117,512.98 and 47,425.94

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Solution

The fourth proportional to 85,151.70, 117,512.98 and 47,425.94 is: 65,449.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,151.70 : 117,512.98 = 47,425.94 : x
  2. Step 2: Convert to fraction form
    85,151.70/117,512.98 = 47,425.94/x
  3. Step 3: Cross multiply
    85,151.70x = 117,512.98 × 47,425.94
  4. Step 4: Simplify right side
    85,151.70x = 5,573,163,538.70
  5. Step 5: Solve for x
    x = 5,573,163,538.70/85,151.70
  6. Step 6: Final answer
    x = 65,449.82

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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.