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Finding the Fourth Proportional to 71,354.21, 98,469.47 and 39,089.57

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Solution

The fourth proportional to 71,354.21, 98,469.47 and 39,089.57 is: 53,943.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,354.21 : 98,469.47 = 39,089.57 : x
  2. Step 2: Convert to fraction form
    71,354.21/98,469.47 = 39,089.57/x
  3. Step 3: Cross multiply
    71,354.21x = 98,469.47 × 39,089.57
  4. Step 4: Simplify right side
    71,354.21x = 3,849,128,552.63
  5. Step 5: Solve for x
    x = 3,849,128,552.63/71,354.21
  6. Step 6: Final answer
    x = 53,943.96

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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.