Home / 43,070.64-64,609.65-11,905.89

Finding the Fourth Proportional to 43,070.64, 64,609.65 and 11,905.89

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Solution

The fourth proportional to 43,070.64, 64,609.65 and 11,905.89 is: 17,859.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,070.64 : 64,609.65 = 11,905.89 : x
  2. Step 2: Convert to fraction form
    43,070.64/64,609.65 = 11,905.89/x
  3. Step 3: Cross multiply
    43,070.64x = 64,609.65 × 11,905.89
  4. Step 4: Simplify right side
    43,070.64x = 769,235,385.84
  5. Step 5: Solve for x
    x = 769,235,385.84/43,070.64
  6. Step 6: Final answer
    x = 17,859.86

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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.