Home / 51,561.78-71,155.20-29,205.78

Finding the Fourth Proportional to 51,561.78, 71,155.20 and 29,205.78

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Solution

The fourth proportional to 51,561.78, 71,155.20 and 29,205.78 is: 40,303.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,561.78 : 71,155.20 = 29,205.78 : x
  2. Step 2: Convert to fraction form
    51,561.78/71,155.20 = 29,205.78/x
  3. Step 3: Cross multiply
    51,561.78x = 71,155.20 × 29,205.78
  4. Step 4: Simplify right side
    51,561.78x = 2,078,143,117.06
  5. Step 5: Solve for x
    x = 2,078,143,117.06/51,561.78
  6. Step 6: Final answer
    x = 40,303.94

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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.