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Finding the Fourth Proportional to 92,889, 128,187.47 and 50,447.53

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Solution

The fourth proportional to 92,889, 128,187.47 and 50,447.53 is: 69,617.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,889 : 128,187.47 = 50,447.53 : x
  2. Step 2: Convert to fraction form
    92,889/128,187.47 = 50,447.53/x
  3. Step 3: Cross multiply
    92,889x = 128,187.47 × 50,447.53
  4. Step 4: Simplify right side
    92,889x = 6,466,741,238.45
  5. Step 5: Solve for x
    x = 6,466,741,238.45/92,889
  6. Step 6: Final answer
    x = 69,617.94

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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.