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Finding the Fourth Proportional to 41,153.80, 61,730.70 and 30,785.80

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Solution

The fourth proportional to 41,153.80, 61,730.70 and 30,785.80 is: 46,178.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,153.80 : 61,730.70 = 30,785.80 : x
  2. Step 2: Convert to fraction form
    41,153.80/61,730.70 = 30,785.80/x
  3. Step 3: Cross multiply
    41,153.80x = 61,730.70 × 30,785.80
  4. Step 4: Simplify right side
    41,153.80x = 1,900,428,984.06
  5. Step 5: Solve for x
    x = 1,900,428,984.06/41,153.80
  6. Step 6: Final answer
    x = 46,178.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.