Home / 30,971.14-42,778.66-30,504.58

Finding the Fourth Proportional to 30,971.14, 42,778.66 and 30,504.58

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Solution

The fourth proportional to 30,971.14, 42,778.66 and 30,504.58 is: 42,134.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.14 : 42,778.66 = 30,504.58 : x
  2. Step 2: Convert to fraction form
    30,971.14/42,778.66 = 30,504.58/x
  3. Step 3: Cross multiply
    30,971.14x = 42,778.66 × 30,504.58
  4. Step 4: Simplify right side
    30,971.14x = 1,304,945,056.26
  5. Step 5: Solve for x
    x = 1,304,945,056.26/30,971.14
  6. Step 6: Final answer
    x = 42,134.23

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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.