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Finding the Fourth Proportional to 71,403.48, 98,537.64 and 39,573

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Solution

The fourth proportional to 71,403.48, 98,537.64 and 39,573 is: 54,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.48 : 98,537.64 = 39,573 : x
  2. Step 2: Convert to fraction form
    71,403.48/98,537.64 = 39,573/x
  3. Step 3: Cross multiply
    71,403.48x = 98,537.64 × 39,573
  4. Step 4: Simplify right side
    71,403.48x = 3,899,430,027.72
  5. Step 5: Solve for x
    x = 3,899,430,027.72/71,403.48
  6. Step 6: Final answer
    x = 54,611.20

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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.