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Finding the Fourth Proportional to 56,580, 84,908.88 and 19,644

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Solution

The fourth proportional to 56,580, 84,908.88 and 19,644 is: 29,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,580 : 84,908.88 = 19,644 : x
  2. Step 2: Convert to fraction form
    56,580/84,908.88 = 19,644/x
  3. Step 3: Cross multiply
    56,580x = 84,908.88 × 19,644
  4. Step 4: Simplify right side
    56,580x = 1,667,950,038.72
  5. Step 5: Solve for x
    x = 1,667,950,038.72/56,580
  6. Step 6: Final answer
    x = 29,479.50

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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.