Home / 81,168.52-121,809.30-28,582.24

Finding the Fourth Proportional to 81,168.52, 121,809.30 and 28,582.24

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Solution

The fourth proportional to 81,168.52, 121,809.30 and 28,582.24 is: 42,893.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,168.52 : 121,809.30 = 28,582.24 : x
  2. Step 2: Convert to fraction form
    81,168.52/121,809.30 = 28,582.24/x
  3. Step 3: Cross multiply
    81,168.52x = 121,809.30 × 28,582.24
  4. Step 4: Simplify right side
    81,168.52x = 3,481,582,646.83
  5. Step 5: Solve for x
    x = 3,481,582,646.83/81,168.52
  6. Step 6: Final answer
    x = 42,893.26

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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.