Home / 55,341.20-83,011.80-31,940.30

Finding the Fourth Proportional to 55,341.20, 83,011.80 and 31,940.30

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Solution

The fourth proportional to 55,341.20, 83,011.80 and 31,940.30 is: 47,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,341.20 : 83,011.80 = 31,940.30 : x
  2. Step 2: Convert to fraction form
    55,341.20/83,011.80 = 31,940.30/x
  3. Step 3: Cross multiply
    55,341.20x = 83,011.80 × 31,940.30
  4. Step 4: Simplify right side
    55,341.20x = 2,651,421,795.54
  5. Step 5: Solve for x
    x = 2,651,421,795.54/55,341.20
  6. Step 6: Final answer
    x = 47,910.45

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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.