Home / 61,640.10-85,065.75-36,142.92

Finding the Fourth Proportional to 61,640.10, 85,065.75 and 36,142.92

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Solution

The fourth proportional to 61,640.10, 85,065.75 and 36,142.92 is: 49,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,640.10 : 85,065.75 = 36,142.92 : x
  2. Step 2: Convert to fraction form
    61,640.10/85,065.75 = 36,142.92/x
  3. Step 3: Cross multiply
    61,640.10x = 85,065.75 × 36,142.92
  4. Step 4: Simplify right side
    61,640.10x = 3,074,524,596.99
  5. Step 5: Solve for x
    x = 3,074,524,596.99/61,640.10
  6. Step 6: Final answer
    x = 49,878.64

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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.