Home / 42,278.88-63,372.47-21,168.01

Finding the Fourth Proportional to 42,278.88, 63,372.47 and 21,168.01

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Solution

The fourth proportional to 42,278.88, 63,372.47 and 21,168.01 is: 31,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,278.88 : 63,372.47 = 21,168.01 : x
  2. Step 2: Convert to fraction form
    42,278.88/63,372.47 = 21,168.01/x
  3. Step 3: Cross multiply
    42,278.88x = 63,372.47 × 21,168.01
  4. Step 4: Simplify right side
    42,278.88x = 1,341,468,814.41
  5. Step 5: Solve for x
    x = 1,341,468,814.41/42,278.88
  6. Step 6: Final answer
    x = 31,729.05

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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.