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Finding the Fourth Proportional to 56,565.81, 84,813.84 and 19,122.35

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Solution

The fourth proportional to 56,565.81, 84,813.84 and 19,122.35 is: 28,671.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,565.81 : 84,813.84 = 19,122.35 : x
  2. Step 2: Convert to fraction form
    56,565.81/84,813.84 = 19,122.35/x
  3. Step 3: Cross multiply
    56,565.81x = 84,813.84 × 19,122.35
  4. Step 4: Simplify right side
    56,565.81x = 1,621,839,509.25
  5. Step 5: Solve for x
    x = 1,621,839,509.25/56,565.81
  6. Step 6: Final answer
    x = 28,671.73

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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.