Home / 85,210.08-117,589.68-49,420.80

Finding the Fourth Proportional to 85,210.08, 117,589.68 and 49,420.80

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Solution

The fourth proportional to 85,210.08, 117,589.68 and 49,420.80 is: 68,200.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,210.08 : 117,589.68 = 49,420.80 : x
  2. Step 2: Convert to fraction form
    85,210.08/117,589.68 = 49,420.80/x
  3. Step 3: Cross multiply
    85,210.08x = 117,589.68 × 49,420.80
  4. Step 4: Simplify right side
    85,210.08x = 5,811,376,057.34
  5. Step 5: Solve for x
    x = 5,811,376,057.34/85,210.08
  6. Step 6: Final answer
    x = 68,200.57

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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.