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Finding the Fourth Proportional to 57,352.51, 86,040.74 and 28,905.45

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Solution

The fourth proportional to 57,352.51, 86,040.74 and 28,905.45 is: 43,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,352.51 : 86,040.74 = 28,905.45 : x
  2. Step 2: Convert to fraction form
    57,352.51/86,040.74 = 28,905.45/x
  3. Step 3: Cross multiply
    57,352.51x = 86,040.74 × 28,905.45
  4. Step 4: Simplify right side
    57,352.51x = 2,487,046,308.03
  5. Step 5: Solve for x
    x = 2,487,046,308.03/57,352.51
  6. Step 6: Final answer
    x = 43,364.21

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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.