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Finding the Fourth Proportional to 43,302.35, 64,955.35 and 13,719.53

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Solution

The fourth proportional to 43,302.35, 64,955.35 and 13,719.53 is: 20,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,302.35 : 64,955.35 = 13,719.53 : x
  2. Step 2: Convert to fraction form
    43,302.35/64,955.35 = 13,719.53/x
  3. Step 3: Cross multiply
    43,302.35x = 64,955.35 × 13,719.53
  4. Step 4: Simplify right side
    43,302.35x = 891,157,052.52
  5. Step 5: Solve for x
    x = 891,157,052.52/43,302.35
  6. Step 6: Final answer
    x = 20,579.88

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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.