Home / 80,417.51-120,665.57-56,876.33

Finding the Fourth Proportional to 80,417.51, 120,665.57 and 56,876.33

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Solution

The fourth proportional to 80,417.51, 120,665.57 and 56,876.33 is: 85,342.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,417.51 : 120,665.57 = 56,876.33 : x
  2. Step 2: Convert to fraction form
    80,417.51/120,665.57 = 56,876.33/x
  3. Step 3: Cross multiply
    80,417.51x = 120,665.57 × 56,876.33
  4. Step 4: Simplify right side
    80,417.51x = 6,863,014,778.96
  5. Step 5: Solve for x
    x = 6,863,014,778.96/80,417.51
  6. Step 6: Final answer
    x = 85,342.29

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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.