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Finding the Fourth Proportional to 92,856, 128,146.14 and 54,617.52

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Solution

The fourth proportional to 92,856, 128,146.14 and 54,617.52 is: 75,375.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,856 : 128,146.14 = 54,617.52 : x
  2. Step 2: Convert to fraction form
    92,856/128,146.14 = 54,617.52/x
  3. Step 3: Cross multiply
    92,856x = 128,146.14 × 54,617.52
  4. Step 4: Simplify right side
    92,856x = 6,999,024,364.37
  5. Step 5: Solve for x
    x = 6,999,024,364.37/92,856
  6. Step 6: Final answer
    x = 75,375.04

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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.