Home / 57,455.60-86,183.40-51,429.20

Finding the Fourth Proportional to 57,455.60, 86,183.40 and 51,429.20

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Solution

The fourth proportional to 57,455.60, 86,183.40 and 51,429.20 is: 77,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,455.60 : 86,183.40 = 51,429.20 : x
  2. Step 2: Convert to fraction form
    57,455.60/86,183.40 = 51,429.20/x
  3. Step 3: Cross multiply
    57,455.60x = 86,183.40 × 51,429.20
  4. Step 4: Simplify right side
    57,455.60x = 4,432,343,315.28
  5. Step 5: Solve for x
    x = 4,432,343,315.28/57,455.60
  6. Step 6: Final answer
    x = 77,143.80

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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.