Home / 66,101.67-99,139.77-18,716.40

Finding the Fourth Proportional to 66,101.67, 99,139.77 and 18,716.40

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Solution

The fourth proportional to 66,101.67, 99,139.77 and 18,716.40 is: 28,070.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,101.67 : 99,139.77 = 18,716.40 : x
  2. Step 2: Convert to fraction form
    66,101.67/99,139.77 = 18,716.40/x
  3. Step 3: Cross multiply
    66,101.67x = 99,139.77 × 18,716.40
  4. Step 4: Simplify right side
    66,101.67x = 1,855,539,591.23
  5. Step 5: Solve for x
    x = 1,855,539,591.23/66,101.67
  6. Step 6: Final answer
    x = 28,070.99

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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.