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Finding the Fourth Proportional to 30,658.80, 43,009.80 and 30,658.80

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Solution

The fourth proportional to 30,658.80, 43,009.80 and 30,658.80 is: 43,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.80 : 43,009.80 = 30,658.80 : x
  2. Step 2: Convert to fraction form
    30,658.80/43,009.80 = 30,658.80/x
  3. Step 3: Cross multiply
    30,658.80x = 43,009.80 × 30,658.80
  4. Step 4: Simplify right side
    30,658.80x = 1,318,628,856.24
  5. Step 5: Solve for x
    x = 1,318,628,856.24/30,658.80
  6. Step 6: Final answer
    x = 43,009.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.