Home / 85,315.87-117,730.32-51,318.04

Finding the Fourth Proportional to 85,315.87, 117,730.32 and 51,318.04

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Solution

The fourth proportional to 85,315.87, 117,730.32 and 51,318.04 is: 70,815.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,315.87 : 117,730.32 = 51,318.04 : x
  2. Step 2: Convert to fraction form
    85,315.87/117,730.32 = 51,318.04/x
  3. Step 3: Cross multiply
    85,315.87x = 117,730.32 × 51,318.04
  4. Step 4: Simplify right side
    85,315.87x = 6,041,689,270.97
  5. Step 5: Solve for x
    x = 6,041,689,270.97/85,315.87
  6. Step 6: Final answer
    x = 70,815.54

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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.