Home / 85,683.23-118,285.77-53,869.67

Finding the Fourth Proportional to 85,683.23, 118,285.77 and 53,869.67

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Solution

The fourth proportional to 85,683.23, 118,285.77 and 53,869.67 is: 74,367.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,683.23 : 118,285.77 = 53,869.67 : x
  2. Step 2: Convert to fraction form
    85,683.23/118,285.77 = 53,869.67/x
  3. Step 3: Cross multiply
    85,683.23x = 118,285.77 × 53,869.67
  4. Step 4: Simplify right side
    85,683.23x = 6,372,015,395.60
  5. Step 5: Solve for x
    x = 6,372,015,395.60/85,683.23
  6. Step 6: Final answer
    x = 74,367.12

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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.