Home / 66,372.35-99,542.80-18,985.98

Finding the Fourth Proportional to 66,372.35, 99,542.80 and 18,985.98

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Solution

The fourth proportional to 66,372.35, 99,542.80 and 18,985.98 is: 28,474.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,372.35 : 99,542.80 = 18,985.98 : x
  2. Step 2: Convert to fraction form
    66,372.35/99,542.80 = 18,985.98/x
  3. Step 3: Cross multiply
    66,372.35x = 99,542.80 × 18,985.98
  4. Step 4: Simplify right side
    66,372.35x = 1,889,917,609.94
  5. Step 5: Solve for x
    x = 1,889,917,609.94/66,372.35
  6. Step 6: Final answer
    x = 28,474.47

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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.