Home / 85,579.08-128,313.96-41,117.40

Finding the Fourth Proportional to 85,579.08, 128,313.96 and 41,117.40

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Solution

The fourth proportional to 85,579.08, 128,313.96 and 41,117.40 is: 61,649.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,579.08 : 128,313.96 = 41,117.40 : x
  2. Step 2: Convert to fraction form
    85,579.08/128,313.96 = 41,117.40/x
  3. Step 3: Cross multiply
    85,579.08x = 128,313.96 × 41,117.40
  4. Step 4: Simplify right side
    85,579.08x = 5,275,936,418.90
  5. Step 5: Solve for x
    x = 5,275,936,418.90/85,579.08
  6. Step 6: Final answer
    x = 61,649.84

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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.