Home / 45,350.18-68,048.31-20,385.20

Finding the Fourth Proportional to 45,350.18, 68,048.31 and 20,385.20

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Solution

The fourth proportional to 45,350.18, 68,048.31 and 20,385.20 is: 30,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,350.18 : 68,048.31 = 20,385.20 : x
  2. Step 2: Convert to fraction form
    45,350.18/68,048.31 = 20,385.20/x
  3. Step 3: Cross multiply
    45,350.18x = 68,048.31 × 20,385.20
  4. Step 4: Simplify right side
    45,350.18x = 1,387,178,409.01
  5. Step 5: Solve for x
    x = 1,387,178,409.01/45,350.18
  6. Step 6: Final answer
    x = 30,588.16

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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.