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Finding the Fourth Proportional to 69,671.75, 96,147.20 and 40,992.49

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Solution

The fourth proportional to 69,671.75, 96,147.20 and 40,992.49 is: 56,569.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,671.75 : 96,147.20 = 40,992.49 : x
  2. Step 2: Convert to fraction form
    69,671.75/96,147.20 = 40,992.49/x
  3. Step 3: Cross multiply
    69,671.75x = 96,147.20 × 40,992.49
  4. Step 4: Simplify right side
    69,671.75x = 3,941,312,448.83
  5. Step 5: Solve for x
    x = 3,941,312,448.83/69,671.75
  6. Step 6: Final answer
    x = 56,569.74

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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.