Home / 40,979.88-56,554.92-30,890.52

Finding the Fourth Proportional to 40,979.88, 56,554.92 and 30,890.52

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Solution

The fourth proportional to 40,979.88, 56,554.92 and 30,890.52 is: 42,630.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,979.88 : 56,554.92 = 30,890.52 : x
  2. Step 2: Convert to fraction form
    40,979.88/56,554.92 = 30,890.52/x
  3. Step 3: Cross multiply
    40,979.88x = 56,554.92 × 30,890.52
  4. Step 4: Simplify right side
    40,979.88x = 1,747,010,887.36
  5. Step 5: Solve for x
    x = 1,747,010,887.36/40,979.88
  6. Step 6: Final answer
    x = 42,630.94

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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.