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Finding the Fourth Proportional to 71,673.41, 98,910.48 and 39,409.39

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Solution

The fourth proportional to 71,673.41, 98,910.48 and 39,409.39 is: 54,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,673.41 : 98,910.48 = 39,409.39 : x
  2. Step 2: Convert to fraction form
    71,673.41/98,910.48 = 39,409.39/x
  3. Step 3: Cross multiply
    71,673.41x = 98,910.48 × 39,409.39
  4. Step 4: Simplify right side
    71,673.41x = 3,898,001,681.41
  5. Step 5: Solve for x
    x = 3,898,001,681.41/71,673.41
  6. Step 6: Final answer
    x = 54,385.60

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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.