Home / 42,685.44-63,975.70-30,209

Finding the Fourth Proportional to 42,685.44, 63,975.70 and 30,209

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Solution

The fourth proportional to 42,685.44, 63,975.70 and 30,209 is: 45,276.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,685.44 : 63,975.70 = 30,209 : x
  2. Step 2: Convert to fraction form
    42,685.44/63,975.70 = 30,209/x
  3. Step 3: Cross multiply
    42,685.44x = 63,975.70 × 30,209
  4. Step 4: Simplify right side
    42,685.44x = 1,932,641,921.30
  5. Step 5: Solve for x
    x = 1,932,641,921.30/42,685.44
  6. Step 6: Final answer
    x = 45,276.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.