Home / 74,571.78-102,913.48-42,742.72

Finding the Fourth Proportional to 74,571.78, 102,913.48 and 42,742.72

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Solution

The fourth proportional to 74,571.78, 102,913.48 and 42,742.72 is: 58,987.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,571.78 : 102,913.48 = 42,742.72 : x
  2. Step 2: Convert to fraction form
    74,571.78/102,913.48 = 42,742.72/x
  3. Step 3: Cross multiply
    74,571.78x = 102,913.48 × 42,742.72
  4. Step 4: Simplify right side
    74,571.78x = 4,398,802,059.87
  5. Step 5: Solve for x
    x = 4,398,802,059.87/74,571.78
  6. Step 6: Final answer
    x = 58,987.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.