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Finding the Fourth Proportional to 55,954.20, 83,977.20 and 55,516.80

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Solution

The fourth proportional to 55,954.20, 83,977.20 and 55,516.80 is: 83,320.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,954.20 : 83,977.20 = 55,516.80 : x
  2. Step 2: Convert to fraction form
    55,954.20/83,977.20 = 55,516.80/x
  3. Step 3: Cross multiply
    55,954.20x = 83,977.20 × 55,516.80
  4. Step 4: Simplify right side
    55,954.20x = 4,662,145,416.96
  5. Step 5: Solve for x
    x = 4,662,145,416.96/55,954.20
  6. Step 6: Final answer
    x = 83,320.74

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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.