Home / 51,638.29-71,261.12-30,143.05

Finding the Fourth Proportional to 51,638.29, 71,261.12 and 30,143.05

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Solution

The fourth proportional to 51,638.29, 71,261.12 and 30,143.05 is: 41,597.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,638.29 : 71,261.12 = 30,143.05 : x
  2. Step 2: Convert to fraction form
    51,638.29/71,261.12 = 30,143.05/x
  3. Step 3: Cross multiply
    51,638.29x = 71,261.12 × 30,143.05
  4. Step 4: Simplify right side
    51,638.29x = 2,148,027,503.22
  5. Step 5: Solve for x
    x = 2,148,027,503.22/51,638.29
  6. Step 6: Final answer
    x = 41,597.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.