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Finding the Fourth Proportional to 65,804.85, 90,810.41 and 35,590.21

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Solution

The fourth proportional to 65,804.85, 90,810.41 and 35,590.21 is: 49,114.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,804.85 : 90,810.41 = 35,590.21 : x
  2. Step 2: Convert to fraction form
    65,804.85/90,810.41 = 35,590.21/x
  3. Step 3: Cross multiply
    65,804.85x = 90,810.41 × 35,590.21
  4. Step 4: Simplify right side
    65,804.85x = 3,231,961,157.11
  5. Step 5: Solve for x
    x = 3,231,961,157.11/65,804.85
  6. Step 6: Final answer
    x = 49,114.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.