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Finding the Fourth Proportional to 40,709.80, 61,064.70 and 30,730.60

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Solution

The fourth proportional to 40,709.80, 61,064.70 and 30,730.60 is: 46,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,709.80 : 61,064.70 = 30,730.60 : x
  2. Step 2: Convert to fraction form
    40,709.80/61,064.70 = 30,730.60/x
  3. Step 3: Cross multiply
    40,709.80x = 61,064.70 × 30,730.60
  4. Step 4: Simplify right side
    40,709.80x = 1,876,554,869.82
  5. Step 5: Solve for x
    x = 1,876,554,869.82/40,709.80
  6. Step 6: Final answer
    x = 46,095.90

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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.