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Finding the Fourth Proportional to 71,637.72, 107,456.48 and 19,047.24

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Solution

The fourth proportional to 71,637.72, 107,456.48 and 19,047.24 is: 28,570.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,637.72 : 107,456.48 = 19,047.24 : x
  2. Step 2: Convert to fraction form
    71,637.72/107,456.48 = 19,047.24/x
  3. Step 3: Cross multiply
    71,637.72x = 107,456.48 × 19,047.24
  4. Step 4: Simplify right side
    71,637.72x = 2,046,749,364.12
  5. Step 5: Solve for x
    x = 2,046,749,364.12/71,637.72
  6. Step 6: Final answer
    x = 28,570.83

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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.