Home / 81,310.50-112,192.38-45,493.56

Finding the Fourth Proportional to 81,310.50, 112,192.38 and 45,493.56

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Solution

The fourth proportional to 81,310.50, 112,192.38 and 45,493.56 is: 62,772.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,310.50 : 112,192.38 = 45,493.56 : x
  2. Step 2: Convert to fraction form
    81,310.50/112,192.38 = 45,493.56/x
  3. Step 3: Cross multiply
    81,310.50x = 112,192.38 × 45,493.56
  4. Step 4: Simplify right side
    81,310.50x = 5,104,030,771.07
  5. Step 5: Solve for x
    x = 5,104,030,771.07/81,310.50
  6. Step 6: Final answer
    x = 62,772.10

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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.