Home / 42,872.09-64,317.53-14,408.01

Finding the Fourth Proportional to 42,872.09, 64,317.53 and 14,408.01

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Solution

The fourth proportional to 42,872.09, 64,317.53 and 14,408.01 is: 21,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,872.09 : 64,317.53 = 14,408.01 : x
  2. Step 2: Convert to fraction form
    42,872.09/64,317.53 = 14,408.01/x
  3. Step 3: Cross multiply
    42,872.09x = 64,317.53 × 14,408.01
  4. Step 4: Simplify right side
    42,872.09x = 926,687,615.42
  5. Step 5: Solve for x
    x = 926,687,615.42/42,872.09
  6. Step 6: Final answer
    x = 21,615.17

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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.