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Finding the Fourth Proportional to 98,333.60, 135,660.72 and 56,913.33

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Solution

The fourth proportional to 98,333.60, 135,660.72 and 56,913.33 is: 78,517.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,333.60 : 135,660.72 = 56,913.33 : x
  2. Step 2: Convert to fraction form
    98,333.60/135,660.72 = 56,913.33/x
  3. Step 3: Cross multiply
    98,333.60x = 135,660.72 × 56,913.33
  4. Step 4: Simplify right side
    98,333.60x = 7,720,904,047.55
  5. Step 5: Solve for x
    x = 7,720,904,047.55/98,333.60
  6. Step 6: Final answer
    x = 78,517.46

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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.