Home / 53,644.55-74,012.33-30,980.54

Finding the Fourth Proportional to 53,644.55, 74,012.33 and 30,980.54

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Solution

The fourth proportional to 53,644.55, 74,012.33 and 30,980.54 is: 42,743.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,644.55 : 74,012.33 = 30,980.54 : x
  2. Step 2: Convert to fraction form
    53,644.55/74,012.33 = 30,980.54/x
  3. Step 3: Cross multiply
    53,644.55x = 74,012.33 × 30,980.54
  4. Step 4: Simplify right side
    53,644.55x = 2,292,942,212.54
  5. Step 5: Solve for x
    x = 2,292,942,212.54/53,644.55
  6. Step 6: Final answer
    x = 42,743.25

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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.