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Finding the Fourth Proportional to 57,770.80, 86,656.20 and 35,317.60

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Solution

The fourth proportional to 57,770.80, 86,656.20 and 35,317.60 is: 52,976.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,770.80 : 86,656.20 = 35,317.60 : x
  2. Step 2: Convert to fraction form
    57,770.80/86,656.20 = 35,317.60/x
  3. Step 3: Cross multiply
    57,770.80x = 86,656.20 × 35,317.60
  4. Step 4: Simplify right side
    57,770.80x = 3,060,489,009.12
  5. Step 5: Solve for x
    x = 3,060,489,009.12/57,770.80
  6. Step 6: Final answer
    x = 52,976.40

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1.5x scale

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.