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Finding the Fourth Proportional to 108,645.20, 162,919.20 and 42,063.20

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Solution

The fourth proportional to 108,645.20, 162,919.20 and 42,063.20 is: 63,075.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,645.20 : 162,919.20 = 42,063.20 : x
  2. Step 2: Convert to fraction form
    108,645.20/162,919.20 = 42,063.20/x
  3. Step 3: Cross multiply
    108,645.20x = 162,919.20 × 42,063.20
  4. Step 4: Simplify right side
    108,645.20x = 6,852,902,893.44
  5. Step 5: Solve for x
    x = 6,852,902,893.44/108,645.20
  6. Step 6: Final answer
    x = 63,075.98

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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.