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Finding the Fourth Proportional to 57,228.40, 85,842.60 and 53,081.20

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Solution

The fourth proportional to 57,228.40, 85,842.60 and 53,081.20 is: 79,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,228.40 : 85,842.60 = 53,081.20 : x
  2. Step 2: Convert to fraction form
    57,228.40/85,842.60 = 53,081.20/x
  3. Step 3: Cross multiply
    57,228.40x = 85,842.60 × 53,081.20
  4. Step 4: Simplify right side
    57,228.40x = 4,556,628,219.12
  5. Step 5: Solve for x
    x = 4,556,628,219.12/57,228.40
  6. Step 6: Final answer
    x = 79,621.80

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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.