Home / 42,102.21-63,153.27-21,325.71

Finding the Fourth Proportional to 42,102.21, 63,153.27 and 21,325.71

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Solution

The fourth proportional to 42,102.21, 63,153.27 and 21,325.71 is: 31,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,102.21 : 63,153.27 = 21,325.71 : x
  2. Step 2: Convert to fraction form
    42,102.21/63,153.27 = 21,325.71/x
  3. Step 3: Cross multiply
    42,102.21x = 63,153.27 × 21,325.71
  4. Step 4: Simplify right side
    42,102.21x = 1,346,788,321.57
  5. Step 5: Solve for x
    x = 1,346,788,321.57/42,102.21
  6. Step 6: Final answer
    x = 31,988.54

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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.