Home / 45,764.40-68,689.80-28,268.40

Finding the Fourth Proportional to 45,764.40, 68,689.80 and 28,268.40

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Solution

The fourth proportional to 45,764.40, 68,689.80 and 28,268.40 is: 42,429.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,764.40 : 68,689.80 = 28,268.40 : x
  2. Step 2: Convert to fraction form
    45,764.40/68,689.80 = 28,268.40/x
  3. Step 3: Cross multiply
    45,764.40x = 68,689.80 × 28,268.40
  4. Step 4: Simplify right side
    45,764.40x = 1,941,750,742.32
  5. Step 5: Solve for x
    x = 1,941,750,742.32/45,764.40
  6. Step 6: Final answer
    x = 42,429.28

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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.