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Finding the Fourth Proportional to 71,558.91, 107,326.21 and 18,973.71

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Solution

The fourth proportional to 71,558.91, 107,326.21 and 18,973.71 is: 28,457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,558.91 : 107,326.21 = 18,973.71 : x
  2. Step 2: Convert to fraction form
    71,558.91/107,326.21 = 18,973.71/x
  3. Step 3: Cross multiply
    71,558.91x = 107,326.21 × 18,973.71
  4. Step 4: Simplify right side
    71,558.91x = 2,036,376,383.94
  5. Step 5: Solve for x
    x = 2,036,376,383.94/71,558.91
  6. Step 6: Final answer
    x = 28,457.34

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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.