Home / 45,178.56-67,748.40-21,811.68

Finding the Fourth Proportional to 45,178.56, 67,748.40 and 21,811.68

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Solution

The fourth proportional to 45,178.56, 67,748.40 and 21,811.68 is: 32,708.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,178.56 : 67,748.40 = 21,811.68 : x
  2. Step 2: Convert to fraction form
    45,178.56/67,748.40 = 21,811.68/x
  3. Step 3: Cross multiply
    45,178.56x = 67,748.40 × 21,811.68
  4. Step 4: Simplify right side
    45,178.56x = 1,477,706,421.31
  5. Step 5: Solve for x
    x = 1,477,706,421.31/45,178.56
  6. Step 6: Final answer
    x = 32,708.13

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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.