Home / 42,112.64-63,178.05-12,126.68

Finding the Fourth Proportional to 42,112.64, 63,178.05 and 12,126.68

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Solution

The fourth proportional to 42,112.64, 63,178.05 and 12,126.68 is: 18,192.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,112.64 : 63,178.05 = 12,126.68 : x
  2. Step 2: Convert to fraction form
    42,112.64/63,178.05 = 12,126.68/x
  3. Step 3: Cross multiply
    42,112.64x = 63,178.05 × 12,126.68
  4. Step 4: Simplify right side
    42,112.64x = 766,139,933.15
  5. Step 5: Solve for x
    x = 766,139,933.15/42,112.64
  6. Step 6: Final answer
    x = 18,192.63

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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.