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Finding the Fourth Proportional to 30,195.30, 42,360.90 and 30,195.30

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Solution

The fourth proportional to 30,195.30, 42,360.90 and 30,195.30 is: 42,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,195.30 : 42,360.90 = 30,195.30 : x
  2. Step 2: Convert to fraction form
    30,195.30/42,360.90 = 30,195.30/x
  3. Step 3: Cross multiply
    30,195.30x = 42,360.90 × 30,195.30
  4. Step 4: Simplify right side
    30,195.30x = 1,279,100,083.77
  5. Step 5: Solve for x
    x = 1,279,100,083.77/30,195.30
  6. Step 6: Final answer
    x = 42,360.90

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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.