Home / 53,405.15-80,155.25-28,465.79

Finding the Fourth Proportional to 53,405.15, 80,155.25 and 28,465.79

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Solution

The fourth proportional to 53,405.15, 80,155.25 and 28,465.79 is: 42,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,405.15 : 80,155.25 = 28,465.79 : x
  2. Step 2: Convert to fraction form
    53,405.15/80,155.25 = 28,465.79/x
  3. Step 3: Cross multiply
    53,405.15x = 80,155.25 × 28,465.79
  4. Step 4: Simplify right side
    53,405.15x = 2,281,682,371.57
  5. Step 5: Solve for x
    x = 2,281,682,371.57/53,405.15
  6. Step 6: Final answer
    x = 42,724.01

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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.