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Finding the Fourth Proportional to 85,751.03, 128,605.86 and 35,804.05

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Solution

The fourth proportional to 85,751.03, 128,605.86 and 35,804.05 is: 53,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,751.03 : 128,605.86 = 35,804.05 : x
  2. Step 2: Convert to fraction form
    85,751.03/128,605.86 = 35,804.05/x
  3. Step 3: Cross multiply
    85,751.03x = 128,605.86 × 35,804.05
  4. Step 4: Simplify right side
    85,751.03x = 4,604,610,681.92
  5. Step 5: Solve for x
    x = 4,604,610,681.92/85,751.03
  6. Step 6: Final answer
    x = 53,697.44

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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.