Home / 45,815.40-68,766.30-28,319.40

Finding the Fourth Proportional to 45,815.40, 68,766.30 and 28,319.40

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Solution

The fourth proportional to 45,815.40, 68,766.30 and 28,319.40 is: 42,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,815.40 : 68,766.30 = 28,319.40 : x
  2. Step 2: Convert to fraction form
    45,815.40/68,766.30 = 28,319.40/x
  3. Step 3: Cross multiply
    45,815.40x = 68,766.30 × 28,319.40
  4. Step 4: Simplify right side
    45,815.40x = 1,947,420,356.22
  5. Step 5: Solve for x
    x = 1,947,420,356.22/45,815.40
  6. Step 6: Final answer
    x = 42,505.80

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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.