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Finding the Fourth Proportional to 35,609.76, 53,455.88 and 20,829.29

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Solution

The fourth proportional to 35,609.76, 53,455.88 and 20,829.29 is: 31,268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,609.76 : 53,455.88 = 20,829.29 : x
  2. Step 2: Convert to fraction form
    35,609.76/53,455.88 = 20,829.29/x
  3. Step 3: Cross multiply
    35,609.76x = 53,455.88 × 20,829.29
  4. Step 4: Simplify right side
    35,609.76x = 1,113,447,811.52
  5. Step 5: Solve for x
    x = 1,113,447,811.52/35,609.76
  6. Step 6: Final answer
    x = 31,268.05

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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.