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Finding the Fourth Proportional to 70,858.47, 106,293.82 and 18,267.51

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Solution

The fourth proportional to 70,858.47, 106,293.82 and 18,267.51 is: 27,402.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,858.47 : 106,293.82 = 18,267.51 : x
  2. Step 2: Convert to fraction form
    70,858.47/106,293.82 = 18,267.51/x
  3. Step 3: Cross multiply
    70,858.47x = 106,293.82 × 18,267.51
  4. Step 4: Simplify right side
    70,858.47x = 1,941,722,842.65
  5. Step 5: Solve for x
    x = 1,941,722,842.65/70,858.47
  6. Step 6: Final answer
    x = 27,402.84

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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.