Home / 85,466.12-128,245.08-35,580.65

Finding the Fourth Proportional to 85,466.12, 128,245.08 and 35,580.65

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Solution

The fourth proportional to 85,466.12, 128,245.08 and 35,580.65 is: 53,390.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,466.12 : 128,245.08 = 35,580.65 : x
  2. Step 2: Convert to fraction form
    85,466.12/128,245.08 = 35,580.65/x
  3. Step 3: Cross multiply
    85,466.12x = 128,245.08 × 35,580.65
  4. Step 4: Simplify right side
    85,466.12x = 4,563,043,305.70
  5. Step 5: Solve for x
    x = 4,563,043,305.70/85,466.12
  6. Step 6: Final answer
    x = 53,390.08

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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.