Home / 74,255.08-102,471.86-40,721

Finding the Fourth Proportional to 74,255.08, 102,471.86 and 40,721

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Solution

The fourth proportional to 74,255.08, 102,471.86 and 40,721 is: 56,194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,255.08 : 102,471.86 = 40,721 : x
  2. Step 2: Convert to fraction form
    74,255.08/102,471.86 = 40,721/x
  3. Step 3: Cross multiply
    74,255.08x = 102,471.86 × 40,721
  4. Step 4: Simplify right side
    74,255.08x = 4,172,756,611.06
  5. Step 5: Solve for x
    x = 4,172,756,611.06/74,255.08
  6. Step 6: Final answer
    x = 56,194.90

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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.