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Finding the Fourth Proportional to 101,605.20, 152,422.08 and 42,427.44

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Solution

The fourth proportional to 101,605.20, 152,422.08 and 42,427.44 is: 63,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,605.20 : 152,422.08 = 42,427.44 : x
  2. Step 2: Convert to fraction form
    101,605.20/152,422.08 = 42,427.44/x
  3. Step 3: Cross multiply
    101,605.20x = 152,422.08 × 42,427.44
  4. Step 4: Simplify right side
    101,605.20x = 6,466,878,653.88
  5. Step 5: Solve for x
    x = 6,466,878,653.88/101,605.20
  6. Step 6: Final answer
    x = 63,647.12

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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.