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Finding the Fourth Proportional to 57,902.40, 86,788.80 and 29,811.60

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Solution

The fourth proportional to 57,902.40, 86,788.80 and 29,811.60 is: 44,684.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,902.40 : 86,788.80 = 29,811.60 : x
  2. Step 2: Convert to fraction form
    57,902.40/86,788.80 = 29,811.60/x
  3. Step 3: Cross multiply
    57,902.40x = 86,788.80 × 29,811.60
  4. Step 4: Simplify right side
    57,902.40x = 2,587,312,990.08
  5. Step 5: Solve for x
    x = 2,587,312,990.08/57,902.40
  6. Step 6: Final answer
    x = 44,684.04

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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.