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Finding the Fourth Proportional to 56,407.86, 84,481.38 and 28,240.92

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Solution

The fourth proportional to 56,407.86, 84,481.38 and 28,240.92 is: 42,296.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,407.86 : 84,481.38 = 28,240.92 : x
  2. Step 2: Convert to fraction form
    56,407.86/84,481.38 = 28,240.92/x
  3. Step 3: Cross multiply
    56,407.86x = 84,481.38 × 28,240.92
  4. Step 4: Simplify right side
    56,407.86x = 2,385,831,894.07
  5. Step 5: Solve for x
    x = 2,385,831,894.07/56,407.86
  6. Step 6: Final answer
    x = 42,296.09

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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.