Home / 45,314.40-67,971.60-28,693.20

Finding the Fourth Proportional to 45,314.40, 67,971.60 and 28,693.20

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Solution

The fourth proportional to 45,314.40, 67,971.60 and 28,693.20 is: 43,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,314.40 : 67,971.60 = 28,693.20 : x
  2. Step 2: Convert to fraction form
    45,314.40/67,971.60 = 28,693.20/x
  3. Step 3: Cross multiply
    45,314.40x = 67,971.60 × 28,693.20
  4. Step 4: Simplify right side
    45,314.40x = 1,950,322,713.12
  5. Step 5: Solve for x
    x = 1,950,322,713.12/45,314.40
  6. Step 6: Final answer
    x = 43,039.80

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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.