Home / 51,511.60-77,340.30-40,430.80

Finding the Fourth Proportional to 51,511.60, 77,340.30 and 40,430.80

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Solution

The fourth proportional to 51,511.60, 77,340.30 and 40,430.80 is: 60,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,511.60 : 77,340.30 = 40,430.80 : x
  2. Step 2: Convert to fraction form
    51,511.60/77,340.30 = 40,430.80/x
  3. Step 3: Cross multiply
    51,511.60x = 77,340.30 × 40,430.80
  4. Step 4: Simplify right side
    51,511.60x = 3,126,930,201.24
  5. Step 5: Solve for x
    x = 3,126,930,201.24/51,511.60
  6. Step 6: Final answer
    x = 60,703.42

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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.