Home / 45,784.40-68,719.80-28,288.40

Finding the Fourth Proportional to 45,784.40, 68,719.80 and 28,288.40

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Solution

The fourth proportional to 45,784.40, 68,719.80 and 28,288.40 is: 42,459.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,784.40 : 68,719.80 = 28,288.40 : x
  2. Step 2: Convert to fraction form
    45,784.40/68,719.80 = 28,288.40/x
  3. Step 3: Cross multiply
    45,784.40x = 68,719.80 × 28,288.40
  4. Step 4: Simplify right side
    45,784.40x = 1,943,973,190.32
  5. Step 5: Solve for x
    x = 1,943,973,190.32/45,784.40
  6. Step 6: Final answer
    x = 42,459.29

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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.