Home / 45,736.40-68,647.80-28,240.40

Finding the Fourth Proportional to 45,736.40, 68,647.80 and 28,240.40

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Solution

The fourth proportional to 45,736.40, 68,647.80 and 28,240.40 is: 42,387.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,736.40 : 68,647.80 = 28,240.40 : x
  2. Step 2: Convert to fraction form
    45,736.40/68,647.80 = 28,240.40/x
  3. Step 3: Cross multiply
    45,736.40x = 68,647.80 × 28,240.40
  4. Step 4: Simplify right side
    45,736.40x = 1,938,641,331.12
  5. Step 5: Solve for x
    x = 1,938,641,331.12/45,736.40
  6. Step 6: Final answer
    x = 42,387.27

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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.