Home / 80,025-120,110.28-42,616.44

Finding the Fourth Proportional to 80,025, 120,110.28 and 42,616.44

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Solution

The fourth proportional to 80,025, 120,110.28 and 42,616.44 is: 63,963.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,025 : 120,110.28 = 42,616.44 : x
  2. Step 2: Convert to fraction form
    80,025/120,110.28 = 42,616.44/x
  3. Step 3: Cross multiply
    80,025x = 120,110.28 × 42,616.44
  4. Step 4: Simplify right side
    80,025x = 5,118,672,541.00
  5. Step 5: Solve for x
    x = 5,118,672,541.00/80,025
  6. Step 6: Final answer
    x = 63,963.42

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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.