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Finding the Fourth Proportional to 91,758.70, 137,415.81 and 46,661.41

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Solution

The fourth proportional to 91,758.70, 137,415.81 and 46,661.41 is: 69,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,758.70 : 137,415.81 = 46,661.41 : x
  2. Step 2: Convert to fraction form
    91,758.70/137,415.81 = 46,661.41/x
  3. Step 3: Cross multiply
    91,758.70x = 137,415.81 × 46,661.41
  4. Step 4: Simplify right side
    91,758.70x = 6,412,015,450.89
  5. Step 5: Solve for x
    x = 6,412,015,450.89/91,758.70
  6. Step 6: Final answer
    x = 69,879.10

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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.