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Finding the Fourth Proportional to 60,419.40, 90,638.33 and 30,821.09

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Solution

The fourth proportional to 60,419.40, 90,638.33 and 30,821.09 is: 46,236.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,419.40 : 90,638.33 = 30,821.09 : x
  2. Step 2: Convert to fraction form
    60,419.40/90,638.33 = 30,821.09/x
  3. Step 3: Cross multiply
    60,419.40x = 90,638.33 × 30,821.09
  4. Step 4: Simplify right side
    60,419.40x = 2,793,572,028.92
  5. Step 5: Solve for x
    x = 2,793,572,028.92/60,419.40
  6. Step 6: Final answer
    x = 46,236.34

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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.