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Finding the Fourth Proportional to 92,984.69, 128,319.59 and 50,543.12

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Solution

The fourth proportional to 92,984.69, 128,319.59 and 50,543.12 is: 69,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,984.69 : 128,319.59 = 50,543.12 : x
  2. Step 2: Convert to fraction form
    92,984.69/128,319.59 = 50,543.12/x
  3. Step 3: Cross multiply
    92,984.69x = 128,319.59 × 50,543.12
  4. Step 4: Simplify right side
    92,984.69x = 6,485,672,435.72
  5. Step 5: Solve for x
    x = 6,485,672,435.72/92,984.69
  6. Step 6: Final answer
    x = 69,749.90

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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.