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Finding the Fourth Proportional to 71,633.40, 98,854.53 and 39,367.68

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Solution

The fourth proportional to 71,633.40, 98,854.53 and 39,367.68 is: 54,327.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,633.40 : 98,854.53 = 39,367.68 : x
  2. Step 2: Convert to fraction form
    71,633.40/98,854.53 = 39,367.68/x
  3. Step 3: Cross multiply
    71,633.40x = 98,854.53 × 39,367.68
  4. Step 4: Simplify right side
    71,633.40x = 3,891,673,503.59
  5. Step 5: Solve for x
    x = 3,891,673,503.59/71,633.40
  6. Step 6: Final answer
    x = 54,327.64

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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.