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Finding the Fourth Proportional to 48,046.72, 72,060.09 and 12,978.19

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Solution

The fourth proportional to 48,046.72, 72,060.09 and 12,978.19 is: 19,464.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,046.72 : 72,060.09 = 12,978.19 : x
  2. Step 2: Convert to fraction form
    48,046.72/72,060.09 = 12,978.19/x
  3. Step 3: Cross multiply
    48,046.72x = 72,060.09 × 12,978.19
  4. Step 4: Simplify right side
    48,046.72x = 935,209,539.44
  5. Step 5: Solve for x
    x = 935,209,539.44/48,046.72
  6. Step 6: Final answer
    x = 19,464.59

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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.