Home / 31,969,439.40-47,954,159.10-20,490,313.80

Finding the Fourth Proportional to 31,969,439.40, 47,954,159.10 and 20,490,313.80

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Solution

The fourth proportional to 31,969,439.40, 47,954,159.10 and 20,490,313.80 is: 30,735,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,969,439.40 : 47,954,159.10 = 20,490,313.80 : x
  2. Step 2: Convert to fraction form
    31,969,439.40/47,954,159.10 = 20,490,313.80/x
  3. Step 3: Cross multiply
    31,969,439.40x = 47,954,159.10 × 20,490,313.80
  4. Step 4: Simplify right side
    31,969,439.40x = 982,595,767,974,125.62
  5. Step 5: Solve for x
    x = 982,595,767,974,125.62/31,969,439.40
  6. Step 6: Final answer
    x = 30,735,470.70

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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.