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Finding the Fourth Proportional to 55,477.66, 83,216.49 and 47,137.90

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Solution

The fourth proportional to 55,477.66, 83,216.49 and 47,137.90 is: 70,706.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,477.66 : 83,216.49 = 47,137.90 : x
  2. Step 2: Convert to fraction form
    55,477.66/83,216.49 = 47,137.90/x
  3. Step 3: Cross multiply
    55,477.66x = 83,216.49 × 47,137.90
  4. Step 4: Simplify right side
    55,477.66x = 3,922,650,583.97
  5. Step 5: Solve for x
    x = 3,922,650,583.97/55,477.66
  6. Step 6: Final answer
    x = 70,706.85

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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.