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Finding the Fourth Proportional to 85,754.60, 118,339.80 and 47,513.36

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Solution

The fourth proportional to 85,754.60, 118,339.80 and 47,513.36 is: 65,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,754.60 : 118,339.80 = 47,513.36 : x
  2. Step 2: Convert to fraction form
    85,754.60/118,339.80 = 47,513.36/x
  3. Step 3: Cross multiply
    85,754.60x = 118,339.80 × 47,513.36
  4. Step 4: Simplify right side
    85,754.60x = 5,622,721,519.73
  5. Step 5: Solve for x
    x = 5,622,721,519.73/85,754.60
  6. Step 6: Final answer
    x = 65,567.58

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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.