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Finding the Fourth Proportional to 85,339.52, 117,768.16 and 47,613.76

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Solution

The fourth proportional to 85,339.52, 117,768.16 and 47,613.76 is: 65,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,339.52 : 117,768.16 = 47,613.76 : x
  2. Step 2: Convert to fraction form
    85,339.52/117,768.16 = 47,613.76/x
  3. Step 3: Cross multiply
    85,339.52x = 117,768.16 × 47,613.76
  4. Step 4: Simplify right side
    85,339.52x = 5,607,384,905.88
  5. Step 5: Solve for x
    x = 5,607,384,905.88/85,339.52
  6. Step 6: Final answer
    x = 65,706.78

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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.