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Finding the Fourth Proportional to 81,413.74, 112,349.29 and 45,114.88

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Solution

The fourth proportional to 81,413.74, 112,349.29 and 45,114.88 is: 62,257.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,413.74 : 112,349.29 = 45,114.88 : x
  2. Step 2: Convert to fraction form
    81,413.74/112,349.29 = 45,114.88/x
  3. Step 3: Cross multiply
    81,413.74x = 112,349.29 × 45,114.88
  4. Step 4: Simplify right side
    81,413.74x = 5,068,624,736.44
  5. Step 5: Solve for x
    x = 5,068,624,736.44/81,413.74
  6. Step 6: Final answer
    x = 62,257.61

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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.