Home / 45,628.80-68,443.20-30,076.80

Finding the Fourth Proportional to 45,628.80, 68,443.20 and 30,076.80

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Solution

The fourth proportional to 45,628.80, 68,443.20 and 30,076.80 is: 45,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,628.80 : 68,443.20 = 30,076.80 : x
  2. Step 2: Convert to fraction form
    45,628.80/68,443.20 = 30,076.80/x
  3. Step 3: Cross multiply
    45,628.80x = 68,443.20 × 30,076.80
  4. Step 4: Simplify right side
    45,628.80x = 2,058,552,437.76
  5. Step 5: Solve for x
    x = 2,058,552,437.76/45,628.80
  6. Step 6: Final answer
    x = 45,115.20

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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.