Home / 42,122.81-58,040.88-28,670.33

Finding the Fourth Proportional to 42,122.81, 58,040.88 and 28,670.33

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Solution

The fourth proportional to 42,122.81, 58,040.88 and 28,670.33 is: 39,504.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,122.81 : 58,040.88 = 28,670.33 : x
  2. Step 2: Convert to fraction form
    42,122.81/58,040.88 = 28,670.33/x
  3. Step 3: Cross multiply
    42,122.81x = 58,040.88 × 28,670.33
  4. Step 4: Simplify right side
    42,122.81x = 1,664,051,183.09
  5. Step 5: Solve for x
    x = 1,664,051,183.09/42,122.81
  6. Step 6: Final answer
    x = 39,504.75

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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.