Home / 40,021.20-59,902.20-31,208.40

Finding the Fourth Proportional to 40,021.20, 59,902.20 and 31,208.40

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Solution

The fourth proportional to 40,021.20, 59,902.20 and 31,208.40 is: 46,711.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,021.20 : 59,902.20 = 31,208.40 : x
  2. Step 2: Convert to fraction form
    40,021.20/59,902.20 = 31,208.40/x
  3. Step 3: Cross multiply
    40,021.20x = 59,902.20 × 31,208.40
  4. Step 4: Simplify right side
    40,021.20x = 1,869,451,818.48
  5. Step 5: Solve for x
    x = 1,869,451,818.48/40,021.20
  6. Step 6: Final answer
    x = 46,711.54

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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.