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Finding the Fourth Proportional to 47,710.62, 71,565.93 and 12,653.01

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Solution

The fourth proportional to 47,710.62, 71,565.93 and 12,653.01 is: 18,979.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,710.62 : 71,565.93 = 12,653.01 : x
  2. Step 2: Convert to fraction form
    47,710.62/71,565.93 = 12,653.01/x
  3. Step 3: Cross multiply
    47,710.62x = 71,565.93 × 12,653.01
  4. Step 4: Simplify right side
    47,710.62x = 905,524,427.95
  5. Step 5: Solve for x
    x = 905,524,427.95/47,710.62
  6. Step 6: Final answer
    x = 18,979.52

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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.