Home / 85,210.25-117,590.55-49,421.48

Finding the Fourth Proportional to 85,210.25, 117,590.55 and 49,421.48

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Solution

The fourth proportional to 85,210.25, 117,590.55 and 49,421.48 is: 68,201.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,210.25 : 117,590.55 = 49,421.48 : x
  2. Step 2: Convert to fraction form
    85,210.25/117,590.55 = 49,421.48/x
  3. Step 3: Cross multiply
    85,210.25x = 117,590.55 × 49,421.48
  4. Step 4: Simplify right side
    85,210.25x = 5,811,499,015.01
  5. Step 5: Solve for x
    x = 5,811,499,015.01/85,210.25
  6. Step 6: Final answer
    x = 68,201.88

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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.