Home / 54,310-74,945.34-30,436.48

Finding the Fourth Proportional to 54,310, 74,945.34 and 30,436.48

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Solution

The fourth proportional to 54,310, 74,945.34 and 30,436.48 is: 42,000.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,310 : 74,945.34 = 30,436.48 : x
  2. Step 2: Convert to fraction form
    54,310/74,945.34 = 30,436.48/x
  3. Step 3: Cross multiply
    54,310x = 74,945.34 × 30,436.48
  4. Step 4: Simplify right side
    54,310x = 2,281,072,342.00
  5. Step 5: Solve for x
    x = 2,281,072,342.00/54,310
  6. Step 6: Final answer
    x = 42,000.96

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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.