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Finding the Fourth Proportional to 42,604.40, 63,906.60 and 19,203.50

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Solution

The fourth proportional to 42,604.40, 63,906.60 and 19,203.50 is: 28,805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,604.40 : 63,906.60 = 19,203.50 : x
  2. Step 2: Convert to fraction form
    42,604.40/63,906.60 = 19,203.50/x
  3. Step 3: Cross multiply
    42,604.40x = 63,906.60 × 19,203.50
  4. Step 4: Simplify right side
    42,604.40x = 1,227,230,393.10
  5. Step 5: Solve for x
    x = 1,227,230,393.10/42,604.40
  6. Step 6: Final answer
    x = 28,805.25

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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.