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Finding the Fourth Proportional to 72,603.93, 100,198.76 and 40,774.71

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Solution

The fourth proportional to 72,603.93, 100,198.76 and 40,774.71 is: 56,272.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.93 : 100,198.76 = 40,774.71 : x
  2. Step 2: Convert to fraction form
    72,603.93/100,198.76 = 40,774.71/x
  3. Step 3: Cross multiply
    72,603.93x = 100,198.76 × 40,774.71
  4. Step 4: Simplify right side
    72,603.93x = 4,085,575,177.49
  5. Step 5: Solve for x
    x = 4,085,575,177.49/72,603.93
  6. Step 6: Final answer
    x = 56,272.09

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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.