Home / 61,311.98-91,918.34-19,170.38

Finding the Fourth Proportional to 61,311.98, 91,918.34 and 19,170.38

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Solution

The fourth proportional to 61,311.98, 91,918.34 and 19,170.38 is: 28,740.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,311.98 : 91,918.34 = 19,170.38 : x
  2. Step 2: Convert to fraction form
    61,311.98/91,918.34 = 19,170.38/x
  3. Step 3: Cross multiply
    61,311.98x = 91,918.34 × 19,170.38
  4. Step 4: Simplify right side
    61,311.98x = 1,762,109,506.77
  5. Step 5: Solve for x
    x = 1,762,109,506.77/61,311.98
  6. Step 6: Final answer
    x = 28,740.05

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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.