Home / 40,860.90-61,274.52-12,771.36

Finding the Fourth Proportional to 40,860.90, 61,274.52 and 12,771.36

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Solution

The fourth proportional to 40,860.90, 61,274.52 and 12,771.36 is: 19,151.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,860.90 : 61,274.52 = 12,771.36 : x
  2. Step 2: Convert to fraction form
    40,860.90/61,274.52 = 12,771.36/x
  3. Step 3: Cross multiply
    40,860.90x = 61,274.52 × 12,771.36
  4. Step 4: Simplify right side
    40,860.90x = 782,558,953.75
  5. Step 5: Solve for x
    x = 782,558,953.75/40,860.90
  6. Step 6: Final answer
    x = 19,151.78

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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.