Home / 55,556.56-76,666.12-31,690.90

Finding the Fourth Proportional to 55,556.56, 76,666.12 and 31,690.90

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Solution

The fourth proportional to 55,556.56, 76,666.12 and 31,690.90 is: 43,732.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,556.56 : 76,666.12 = 31,690.90 : x
  2. Step 2: Convert to fraction form
    55,556.56/76,666.12 = 31,690.90/x
  3. Step 3: Cross multiply
    55,556.56x = 76,666.12 × 31,690.90
  4. Step 4: Simplify right side
    55,556.56x = 2,429,618,342.31
  5. Step 5: Solve for x
    x = 2,429,618,342.31/55,556.56
  6. Step 6: Final answer
    x = 43,732.34

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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.