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Finding the Fourth Proportional to 108,595.20, 162,763.20 and 45,415.20

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Solution

The fourth proportional to 108,595.20, 162,763.20 and 45,415.20 is: 68,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,595.20 : 162,763.20 = 45,415.20 : x
  2. Step 2: Convert to fraction form
    108,595.20/162,763.20 = 45,415.20/x
  3. Step 3: Cross multiply
    108,595.20x = 162,763.20 × 45,415.20
  4. Step 4: Simplify right side
    108,595.20x = 7,391,923,280.64
  5. Step 5: Solve for x
    x = 7,391,923,280.64/108,595.20
  6. Step 6: Final answer
    x = 68,068.60

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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.