Home / 80,995.19-121,533.77-54,644.56

Finding the Fourth Proportional to 80,995.19, 121,533.77 and 54,644.56

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Solution

The fourth proportional to 80,995.19, 121,533.77 and 54,644.56 is: 81,994.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,995.19 : 121,533.77 = 54,644.56 : x
  2. Step 2: Convert to fraction form
    80,995.19/121,533.77 = 54,644.56/x
  3. Step 3: Cross multiply
    80,995.19x = 121,533.77 × 54,644.56
  4. Step 4: Simplify right side
    80,995.19x = 6,641,159,219.57
  5. Step 5: Solve for x
    x = 6,641,159,219.57/80,995.19
  6. Step 6: Final answer
    x = 81,994.49

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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.