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Finding the Fourth Proportional to 71,364.91, 98,489.59 and 39,536.77

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Solution

The fourth proportional to 71,364.91, 98,489.59 and 39,536.77 is: 54,564.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,364.91 : 98,489.59 = 39,536.77 : x
  2. Step 2: Convert to fraction form
    71,364.91/98,489.59 = 39,536.77/x
  3. Step 3: Cross multiply
    71,364.91x = 98,489.59 × 39,536.77
  4. Step 4: Simplify right side
    71,364.91x = 3,893,960,069.54
  5. Step 5: Solve for x
    x = 3,893,960,069.54/71,364.91
  6. Step 6: Final answer
    x = 54,564.07

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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.