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Finding the Fourth Proportional to 54,302.55, 74,939.55 and 30,428.34

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Solution

The fourth proportional to 54,302.55, 74,939.55 and 30,428.34 is: 41,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,302.55 : 74,939.55 = 30,428.34 : x
  2. Step 2: Convert to fraction form
    54,302.55/74,939.55 = 30,428.34/x
  3. Step 3: Cross multiply
    54,302.55x = 74,939.55 × 30,428.34
  4. Step 4: Simplify right side
    54,302.55x = 2,280,286,106.85
  5. Step 5: Solve for x
    x = 2,280,286,106.85/54,302.55
  6. Step 6: Final answer
    x = 41,992.25

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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.