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Finding the Fourth Proportional to 76,523.32, 105,601.62 and 42,989.32

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Solution

The fourth proportional to 76,523.32, 105,601.62 and 42,989.32 is: 59,324.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,523.32 : 105,601.62 = 42,989.32 : x
  2. Step 2: Convert to fraction form
    76,523.32/105,601.62 = 42,989.32/x
  3. Step 3: Cross multiply
    76,523.32x = 105,601.62 × 42,989.32
  4. Step 4: Simplify right side
    76,523.32x = 4,539,741,834.70
  5. Step 5: Solve for x
    x = 4,539,741,834.70/76,523.32
  6. Step 6: Final answer
    x = 59,324.95

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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.