Home / 80,950.57-121,352.34-28,331.35

Finding the Fourth Proportional to 80,950.57, 121,352.34 and 28,331.35

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Solution

The fourth proportional to 80,950.57, 121,352.34 and 28,331.35 is: 42,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.57 : 121,352.34 = 28,331.35 : x
  2. Step 2: Convert to fraction form
    80,950.57/121,352.34 = 28,331.35/x
  3. Step 3: Cross multiply
    80,950.57x = 121,352.34 × 28,331.35
  4. Step 4: Simplify right side
    80,950.57x = 3,438,075,385.31
  5. Step 5: Solve for x
    x = 3,438,075,385.31/80,950.57
  6. Step 6: Final answer
    x = 42,471.29

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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.