Home / 87,155.36-130,725.44-53,880.56

Finding the Fourth Proportional to 87,155.36, 130,725.44 and 53,880.56

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Solution

The fourth proportional to 87,155.36, 130,725.44 and 53,880.56 is: 80,816.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,155.36 : 130,725.44 = 53,880.56 : x
  2. Step 2: Convert to fraction form
    87,155.36/130,725.44 = 53,880.56/x
  3. Step 3: Cross multiply
    87,155.36x = 130,725.44 × 53,880.56
  4. Step 4: Simplify right side
    87,155.36x = 7,043,559,913.45
  5. Step 5: Solve for x
    x = 7,043,559,913.45/87,155.36
  6. Step 6: Final answer
    x = 80,816.14

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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.