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Finding the Fourth Proportional to 70,511.31, 105,765.60 and 17,203.64

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Solution

The fourth proportional to 70,511.31, 105,765.60 and 17,203.64 is: 25,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,511.31 : 105,765.60 = 17,203.64 : x
  2. Step 2: Convert to fraction form
    70,511.31/105,765.60 = 17,203.64/x
  3. Step 3: Cross multiply
    70,511.31x = 105,765.60 × 17,203.64
  4. Step 4: Simplify right side
    70,511.31x = 1,819,553,340.63
  5. Step 5: Solve for x
    x = 1,819,553,340.63/70,511.31
  6. Step 6: Final answer
    x = 25,805.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.