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Finding the Fourth Proportional to 42,903.44, 64,367.88 and 30,447.44

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Solution

The fourth proportional to 42,903.44, 64,367.88 and 30,447.44 is: 45,680.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,903.44 : 64,367.88 = 30,447.44 : x
  2. Step 2: Convert to fraction form
    42,903.44/64,367.88 = 30,447.44/x
  3. Step 3: Cross multiply
    42,903.44x = 64,367.88 × 30,447.44
  4. Step 4: Simplify right side
    42,903.44x = 1,959,837,164.23
  5. Step 5: Solve for x
    x = 1,959,837,164.23/42,903.44
  6. Step 6: Final answer
    x = 45,680.19

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1.5x scale

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.