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Finding the Fourth Proportional to 42,544.12, 63,825.42 and 12,961.12

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Solution

The fourth proportional to 42,544.12, 63,825.42 and 12,961.12 is: 19,444.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,544.12 : 63,825.42 = 12,961.12 : x
  2. Step 2: Convert to fraction form
    42,544.12/63,825.42 = 12,961.12/x
  3. Step 3: Cross multiply
    42,544.12x = 63,825.42 × 12,961.12
  4. Step 4: Simplify right side
    42,544.12x = 827,248,927.67
  5. Step 5: Solve for x
    x = 827,248,927.67/42,544.12
  6. Step 6: Final answer
    x = 19,444.49

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1.5x scale

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.