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Finding the Fourth Proportional to 72,651.93, 100,267.77 and 43,987.38

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Solution

The fourth proportional to 72,651.93, 100,267.77 and 43,987.38 is: 60,707.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,651.93 : 100,267.77 = 43,987.38 : x
  2. Step 2: Convert to fraction form
    72,651.93/100,267.77 = 43,987.38/x
  3. Step 3: Cross multiply
    72,651.93x = 100,267.77 × 43,987.38
  4. Step 4: Simplify right side
    72,651.93x = 4,410,516,500.74
  5. Step 5: Solve for x
    x = 4,410,516,500.74/72,651.93
  6. Step 6: Final answer
    x = 60,707.49

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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.