Home / 42,905.12-64,334.64-19,536.80

Finding the Fourth Proportional to 42,905.12, 64,334.64 and 19,536.80

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Solution

The fourth proportional to 42,905.12, 64,334.64 and 19,536.80 is: 29,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,905.12 : 64,334.64 = 19,536.80 : x
  2. Step 2: Convert to fraction form
    42,905.12/64,334.64 = 19,536.80/x
  3. Step 3: Cross multiply
    42,905.12x = 64,334.64 × 19,536.80
  4. Step 4: Simplify right side
    42,905.12x = 1,256,892,994.75
  5. Step 5: Solve for x
    x = 1,256,892,994.75/42,905.12
  6. Step 6: Final answer
    x = 29,294.71

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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.