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Finding the Fourth Proportional to 48,307.20, 72,460.80 and 42,163.20

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Solution

The fourth proportional to 48,307.20, 72,460.80 and 42,163.20 is: 63,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,307.20 : 72,460.80 = 42,163.20 : x
  2. Step 2: Convert to fraction form
    48,307.20/72,460.80 = 42,163.20/x
  3. Step 3: Cross multiply
    48,307.20x = 72,460.80 × 42,163.20
  4. Step 4: Simplify right side
    48,307.20x = 3,055,179,202.56
  5. Step 5: Solve for x
    x = 3,055,179,202.56/48,307.20
  6. Step 6: Final answer
    x = 63,244.80

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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.