Home / 66,511.23-99,781.10-19,125.90

Finding the Fourth Proportional to 66,511.23, 99,781.10 and 19,125.90

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Solution

The fourth proportional to 66,511.23, 99,781.10 and 19,125.90 is: 28,692.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,511.23 : 99,781.10 = 19,125.90 : x
  2. Step 2: Convert to fraction form
    66,511.23/99,781.10 = 19,125.90/x
  3. Step 3: Cross multiply
    66,511.23x = 99,781.10 × 19,125.90
  4. Step 4: Simplify right side
    66,511.23x = 1,908,403,340.49
  5. Step 5: Solve for x
    x = 1,908,403,340.49/66,511.23
  6. Step 6: Final answer
    x = 28,692.95

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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.