Home / 85,520.10-128,268.07-29,359.22

Finding the Fourth Proportional to 85,520.10, 128,268.07 and 29,359.22

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Solution

The fourth proportional to 85,520.10, 128,268.07 and 29,359.22 is: 44,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520.10 : 128,268.07 = 29,359.22 : x
  2. Step 2: Convert to fraction form
    85,520.10/128,268.07 = 29,359.22/x
  3. Step 3: Cross multiply
    85,520.10x = 128,268.07 × 29,359.22
  4. Step 4: Simplify right side
    85,520.10x = 3,765,850,486.11
  5. Step 5: Solve for x
    x = 3,765,850,486.11/85,520.10
  6. Step 6: Final answer
    x = 44,034.68

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1.5x scale

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.