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Finding the Fourth Proportional to 35,438.79, 53,160.12 and 14,375.70

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Solution

The fourth proportional to 35,438.79, 53,160.12 and 14,375.70 is: 21,564.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,438.79 : 53,160.12 = 14,375.70 : x
  2. Step 2: Convert to fraction form
    35,438.79/53,160.12 = 14,375.70/x
  3. Step 3: Cross multiply
    35,438.79x = 53,160.12 × 14,375.70
  4. Step 4: Simplify right side
    35,438.79x = 764,213,937.08
  5. Step 5: Solve for x
    x = 764,213,937.08/35,438.79
  6. Step 6: Final answer
    x = 21,564.33

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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.