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Finding the Fourth Proportional to 66,136.50, 99,206.37 and 16,888.50

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Solution

The fourth proportional to 66,136.50, 99,206.37 and 16,888.50 is: 25,333.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,136.50 : 99,206.37 = 16,888.50 : x
  2. Step 2: Convert to fraction form
    66,136.50/99,206.37 = 16,888.50/x
  3. Step 3: Cross multiply
    66,136.50x = 99,206.37 × 16,888.50
  4. Step 4: Simplify right side
    66,136.50x = 1,675,446,779.75
  5. Step 5: Solve for x
    x = 1,675,446,779.75/66,136.50
  6. Step 6: Final answer
    x = 25,333.16

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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.