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Finding the Fourth Proportional to 42,551.20, 63,855.60 and 19,165.60

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Solution

The fourth proportional to 42,551.20, 63,855.60 and 19,165.60 is: 28,761.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,551.20 : 63,855.60 = 19,165.60 : x
  2. Step 2: Convert to fraction form
    42,551.20/63,855.60 = 19,165.60/x
  3. Step 3: Cross multiply
    42,551.20x = 63,855.60 × 19,165.60
  4. Step 4: Simplify right side
    42,551.20x = 1,223,830,887.36
  5. Step 5: Solve for x
    x = 1,223,830,887.36/42,551.20
  6. Step 6: Final answer
    x = 28,761.37

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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.