Home / 57,136.24-85,736.76-30,840.40

Finding the Fourth Proportional to 57,136.24, 85,736.76 and 30,840.40

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Solution

The fourth proportional to 57,136.24, 85,736.76 and 30,840.40 is: 46,278.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.24 : 85,736.76 = 30,840.40 : x
  2. Step 2: Convert to fraction form
    57,136.24/85,736.76 = 30,840.40/x
  3. Step 3: Cross multiply
    57,136.24x = 85,736.76 × 30,840.40
  4. Step 4: Simplify right side
    57,136.24x = 2,644,155,973.10
  5. Step 5: Solve for x
    x = 2,644,155,973.10/57,136.24
  6. Step 6: Final answer
    x = 46,278.09

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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.