Home / 66,305.12-91,501.25-36,090.77

Finding the Fourth Proportional to 66,305.12, 91,501.25 and 36,090.77

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Solution

The fourth proportional to 66,305.12, 91,501.25 and 36,090.77 is: 49,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,305.12 : 91,501.25 = 36,090.77 : x
  2. Step 2: Convert to fraction form
    66,305.12/91,501.25 = 36,090.77/x
  3. Step 3: Cross multiply
    66,305.12x = 91,501.25 × 36,090.77
  4. Step 4: Simplify right side
    66,305.12x = 3,302,349,930.50
  5. Step 5: Solve for x
    x = 3,302,349,930.50/66,305.12
  6. Step 6: Final answer
    x = 49,805.36

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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.