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Finding the Fourth Proportional to 74,960.64, 112,440.96 and 43,778.88

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Solution

The fourth proportional to 74,960.64, 112,440.96 and 43,778.88 is: 65,668.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,960.64 : 112,440.96 = 43,778.88 : x
  2. Step 2: Convert to fraction form
    74,960.64/112,440.96 = 43,778.88/x
  3. Step 3: Cross multiply
    74,960.64x = 112,440.96 × 43,778.88
  4. Step 4: Simplify right side
    74,960.64x = 4,922,539,294.92
  5. Step 5: Solve for x
    x = 4,922,539,294.92/74,960.64
  6. Step 6: Final answer
    x = 65,668.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.