Home / 39,930.79-55,122.20-25,790.53

Finding the Fourth Proportional to 39,930.79, 55,122.20 and 25,790.53

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Solution

The fourth proportional to 39,930.79, 55,122.20 and 25,790.53 is: 35,602.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,930.79 : 55,122.20 = 25,790.53 : x
  2. Step 2: Convert to fraction form
    39,930.79/55,122.20 = 25,790.53/x
  3. Step 3: Cross multiply
    39,930.79x = 55,122.20 × 25,790.53
  4. Step 4: Simplify right side
    39,930.79x = 1,421,630,582.72
  5. Step 5: Solve for x
    x = 1,421,630,582.72/39,930.79
  6. Step 6: Final answer
    x = 35,602.37

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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.