Home / 42,110.78-63,180.75-28,126.94

Finding the Fourth Proportional to 42,110.78, 63,180.75 and 28,126.94

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Solution

The fourth proportional to 42,110.78, 63,180.75 and 28,126.94 is: 42,200.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,110.78 : 63,180.75 = 28,126.94 : x
  2. Step 2: Convert to fraction form
    42,110.78/63,180.75 = 28,126.94/x
  3. Step 3: Cross multiply
    42,110.78x = 63,180.75 × 28,126.94
  4. Step 4: Simplify right side
    42,110.78x = 1,777,081,164.41
  5. Step 5: Solve for x
    x = 1,777,081,164.41/42,110.78
  6. Step 6: Final answer
    x = 42,200.15

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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.