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Finding the Fourth Proportional to 71,205.69, 98,259.75 and 39,372.51

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Solution

The fourth proportional to 71,205.69, 98,259.75 and 39,372.51 is: 54,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,205.69 : 98,259.75 = 39,372.51 : x
  2. Step 2: Convert to fraction form
    71,205.69/98,259.75 = 39,372.51/x
  3. Step 3: Cross multiply
    71,205.69x = 98,259.75 × 39,372.51
  4. Step 4: Simplify right side
    71,205.69x = 3,868,732,989.47
  5. Step 5: Solve for x
    x = 3,868,732,989.47/71,205.69
  6. Step 6: Final answer
    x = 54,331.80

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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.