Home / 71,880.32-99,195.51-39,616.09

Finding the Fourth Proportional to 71,880.32, 99,195.51 and 39,616.09

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Solution

The fourth proportional to 71,880.32, 99,195.51 and 39,616.09 is: 54,670.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,880.32 : 99,195.51 = 39,616.09 : x
  2. Step 2: Convert to fraction form
    71,880.32/99,195.51 = 39,616.09/x
  3. Step 3: Cross multiply
    71,880.32x = 99,195.51 × 39,616.09
  4. Step 4: Simplify right side
    71,880.32x = 3,929,737,557.70
  5. Step 5: Solve for x
    x = 3,929,737,557.70/71,880.32
  6. Step 6: Final answer
    x = 54,670.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.