Home / 80,577.36-120,856.41-21,417.57

Finding the Fourth Proportional to 80,577.36, 120,856.41 and 21,417.57

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Solution

The fourth proportional to 80,577.36, 120,856.41 and 21,417.57 is: 32,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,577.36 : 120,856.41 = 21,417.57 : x
  2. Step 2: Convert to fraction form
    80,577.36/120,856.41 = 21,417.57/x
  3. Step 3: Cross multiply
    80,577.36x = 120,856.41 × 21,417.57
  4. Step 4: Simplify right side
    80,577.36x = 2,588,450,621.12
  5. Step 5: Solve for x
    x = 2,588,450,621.12/80,577.36
  6. Step 6: Final answer
    x = 32,123.80

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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.