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Finding the Fourth Proportional to 66,460.20, 99,690.30 and 48,748.20

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Solution

The fourth proportional to 66,460.20, 99,690.30 and 48,748.20 is: 73,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,460.20 : 99,690.30 = 48,748.20 : x
  2. Step 2: Convert to fraction form
    66,460.20/99,690.30 = 48,748.20/x
  3. Step 3: Cross multiply
    66,460.20x = 99,690.30 × 48,748.20
  4. Step 4: Simplify right side
    66,460.20x = 4,859,722,682.46
  5. Step 5: Solve for x
    x = 4,859,722,682.46/66,460.20
  6. Step 6: Final answer
    x = 73,122.30

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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.