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Finding the Fourth Proportional to 57,909.04, 86,750.44 and 39,894.09

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Solution

The fourth proportional to 57,909.04, 86,750.44 and 39,894.09 is: 59,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,909.04 : 86,750.44 = 39,894.09 : x
  2. Step 2: Convert to fraction form
    57,909.04/86,750.44 = 39,894.09/x
  3. Step 3: Cross multiply
    57,909.04x = 86,750.44 × 39,894.09
  4. Step 4: Simplify right side
    57,909.04x = 3,460,829,860.90
  5. Step 5: Solve for x
    x = 3,460,829,860.90/57,909.04
  6. Step 6: Final answer
    x = 59,763.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.