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Finding the Fourth Proportional to 92,896.43, 128,250.19 and 61,157.60

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Solution

The fourth proportional to 92,896.43, 128,250.19 and 61,157.60 is: 84,432.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,896.43 : 128,250.19 = 61,157.60 : x
  2. Step 2: Convert to fraction form
    92,896.43/128,250.19 = 61,157.60/x
  3. Step 3: Cross multiply
    92,896.43x = 128,250.19 × 61,157.60
  4. Step 4: Simplify right side
    92,896.43x = 7,843,473,255.14
  5. Step 5: Solve for x
    x = 7,843,473,255.14/92,896.43
  6. Step 6: Final answer
    x = 84,432.45

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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.