Home / 51,216.40-76,824.60-31,430.80

Finding the Fourth Proportional to 51,216.40, 76,824.60 and 31,430.80

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Solution

The fourth proportional to 51,216.40, 76,824.60 and 31,430.80 is: 47,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,216.40 : 76,824.60 = 31,430.80 : x
  2. Step 2: Convert to fraction form
    51,216.40/76,824.60 = 31,430.80/x
  3. Step 3: Cross multiply
    51,216.40x = 76,824.60 × 31,430.80
  4. Step 4: Simplify right side
    51,216.40x = 2,414,658,637.68
  5. Step 5: Solve for x
    x = 2,414,658,637.68/51,216.40
  6. Step 6: Final answer
    x = 47,146.20

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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.