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Finding the Fourth Proportional to 57,618.63, 79,467.63 and 39,709.53

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Solution

The fourth proportional to 57,618.63, 79,467.63 and 39,709.53 is: 54,767.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,618.63 : 79,467.63 = 39,709.53 : x
  2. Step 2: Convert to fraction form
    57,618.63/79,467.63 = 39,709.53/x
  3. Step 3: Cross multiply
    57,618.63x = 79,467.63 × 39,709.53
  4. Step 4: Simplify right side
    57,618.63x = 3,155,622,237.51
  5. Step 5: Solve for x
    x = 3,155,622,237.51/57,618.63
  6. Step 6: Final answer
    x = 54,767.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.