Home / 42,742.20-64,112.70-19,368.60

Finding the Fourth Proportional to 42,742.20, 64,112.70 and 19,368.60

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Solution

The fourth proportional to 42,742.20, 64,112.70 and 19,368.60 is: 29,052.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,742.20 : 64,112.70 = 19,368.60 : x
  2. Step 2: Convert to fraction form
    42,742.20/64,112.70 = 19,368.60/x
  3. Step 3: Cross multiply
    42,742.20x = 64,112.70 × 19,368.60
  4. Step 4: Simplify right side
    42,742.20x = 1,241,773,241.22
  5. Step 5: Solve for x
    x = 1,241,773,241.22/42,742.20
  6. Step 6: Final answer
    x = 29,052.63

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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.