Home / 51,200.40-76,800.60-30,205.20

Finding the Fourth Proportional to 51,200.40, 76,800.60 and 30,205.20

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Solution

The fourth proportional to 51,200.40, 76,800.60 and 30,205.20 is: 45,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,200.40 : 76,800.60 = 30,205.20 : x
  2. Step 2: Convert to fraction form
    51,200.40/76,800.60 = 30,205.20/x
  3. Step 3: Cross multiply
    51,200.40x = 76,800.60 × 30,205.20
  4. Step 4: Simplify right side
    51,200.40x = 2,319,777,483.12
  5. Step 5: Solve for x
    x = 2,319,777,483.12/51,200.40
  6. Step 6: Final answer
    x = 45,307.80

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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.