Home / 45,353.28-68,047.20-20,712

Finding the Fourth Proportional to 45,353.28, 68,047.20 and 20,712

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Solution

The fourth proportional to 45,353.28, 68,047.20 and 20,712 is: 31,075.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,353.28 : 68,047.20 = 20,712 : x
  2. Step 2: Convert to fraction form
    45,353.28/68,047.20 = 20,712/x
  3. Step 3: Cross multiply
    45,353.28x = 68,047.20 × 20,712
  4. Step 4: Simplify right side
    45,353.28x = 1,409,393,606.40
  5. Step 5: Solve for x
    x = 1,409,393,606.40/45,353.28
  6. Step 6: Final answer
    x = 31,075.89

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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.