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Finding the Fourth Proportional to 92,847.29, 128,129.78 and 54,608.45

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Solution

The fourth proportional to 92,847.29, 128,129.78 and 54,608.45 is: 75,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,847.29 : 128,129.78 = 54,608.45 : x
  2. Step 2: Convert to fraction form
    92,847.29/128,129.78 = 54,608.45/x
  3. Step 3: Cross multiply
    92,847.29x = 128,129.78 × 54,608.45
  4. Step 4: Simplify right side
    92,847.29x = 6,996,968,364.32
  5. Step 5: Solve for x
    x = 6,996,968,364.32/92,847.29
  6. Step 6: Final answer
    x = 75,359.97

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1.5x scale

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.