Home / 66,305.26-91,513.12-42,431.12

Finding the Fourth Proportional to 66,305.26, 91,513.12 and 42,431.12

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Solution

The fourth proportional to 66,305.26, 91,513.12 and 42,431.12 is: 58,562.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,305.26 : 91,513.12 = 42,431.12 : x
  2. Step 2: Convert to fraction form
    66,305.26/91,513.12 = 42,431.12/x
  3. Step 3: Cross multiply
    66,305.26x = 91,513.12 × 42,431.12
  4. Step 4: Simplify right side
    66,305.26x = 3,883,003,612.65
  5. Step 5: Solve for x
    x = 3,883,003,612.65/66,305.26
  6. Step 6: Final answer
    x = 58,562.53

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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.