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Finding the Fourth Proportional to 92,986.63, 128,321.64 and 50,545.16

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Solution

The fourth proportional to 92,986.63, 128,321.64 and 50,545.16 is: 69,752.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,986.63 : 128,321.64 = 50,545.16 : x
  2. Step 2: Convert to fraction form
    92,986.63/128,321.64 = 50,545.16/x
  3. Step 3: Cross multiply
    92,986.63x = 128,321.64 × 50,545.16
  4. Step 4: Simplify right side
    92,986.63x = 6,486,037,572.54
  5. Step 5: Solve for x
    x = 6,486,037,572.54/92,986.63
  6. Step 6: Final answer
    x = 69,752.37

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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.