Home / 55,611.88-83,430.12-30,639.07

Finding the Fourth Proportional to 55,611.88, 83,430.12 and 30,639.07

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Solution

The fourth proportional to 55,611.88, 83,430.12 and 30,639.07 is: 45,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,611.88 : 83,430.12 = 30,639.07 : x
  2. Step 2: Convert to fraction form
    55,611.88/83,430.12 = 30,639.07/x
  3. Step 3: Cross multiply
    55,611.88x = 83,430.12 × 30,639.07
  4. Step 4: Simplify right side
    55,611.88x = 2,556,221,505.97
  5. Step 5: Solve for x
    x = 2,556,221,505.97/55,611.88
  6. Step 6: Final answer
    x = 45,965.39

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1.5x scale

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.