Home / 71,823.24-99,114.57-39,558.78

Finding the Fourth Proportional to 71,823.24, 99,114.57 and 39,558.78

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Solution

The fourth proportional to 71,823.24, 99,114.57 and 39,558.78 is: 54,590.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,823.24 : 99,114.57 = 39,558.78 : x
  2. Step 2: Convert to fraction form
    71,823.24/99,114.57 = 39,558.78/x
  3. Step 3: Cross multiply
    71,823.24x = 99,114.57 × 39,558.78
  4. Step 4: Simplify right side
    71,823.24x = 3,920,851,469.42
  5. Step 5: Solve for x
    x = 3,920,851,469.42/71,823.24
  6. Step 6: Final answer
    x = 54,590.29

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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.