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Finding the Fourth Proportional to 56,938.52, 85,460.28 and 28,878.26

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Solution

The fourth proportional to 56,938.52, 85,460.28 and 28,878.26 is: 43,344.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,938.52 : 85,460.28 = 28,878.26 : x
  2. Step 2: Convert to fraction form
    56,938.52/85,460.28 = 28,878.26/x
  3. Step 3: Cross multiply
    56,938.52x = 85,460.28 × 28,878.26
  4. Step 4: Simplify right side
    56,938.52x = 2,467,944,185.51
  5. Step 5: Solve for x
    x = 2,467,944,185.51/56,938.52
  6. Step 6: Final answer
    x = 43,344.02

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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.