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Finding the Fourth Proportional to 55,928, 83,896.80 and 18,488

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Solution

The fourth proportional to 55,928, 83,896.80 and 18,488 is: 27,733.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,928 : 83,896.80 = 18,488 : x
  2. Step 2: Convert to fraction form
    55,928/83,896.80 = 18,488/x
  3. Step 3: Cross multiply
    55,928x = 83,896.80 × 18,488
  4. Step 4: Simplify right side
    55,928x = 1,551,084,038.40
  5. Step 5: Solve for x
    x = 1,551,084,038.40/55,928
  6. Step 6: Final answer
    x = 27,733.59

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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.