Home / 85,632.10-118,285.25-65,734.85

Finding the Fourth Proportional to 85,632.10, 118,285.25 and 65,734.85

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Solution

The fourth proportional to 85,632.10, 118,285.25 and 65,734.85 is: 90,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,632.10 : 118,285.25 = 65,734.85 : x
  2. Step 2: Convert to fraction form
    85,632.10/118,285.25 = 65,734.85/x
  3. Step 3: Cross multiply
    85,632.10x = 118,285.25 × 65,734.85
  4. Step 4: Simplify right side
    85,632.10x = 7,775,463,133.00
  5. Step 5: Solve for x
    x = 7,775,463,133.00/85,632.10
  6. Step 6: Final answer
    x = 90,800.80

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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.