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Finding the Fourth Proportional to 98,480.28, 135,905.88 and 56,041.56

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Solution

The fourth proportional to 98,480.28, 135,905.88 and 56,041.56 is: 77,339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,480.28 : 135,905.88 = 56,041.56 : x
  2. Step 2: Convert to fraction form
    98,480.28/135,905.88 = 56,041.56/x
  3. Step 3: Cross multiply
    98,480.28x = 135,905.88 × 56,041.56
  4. Step 4: Simplify right side
    98,480.28x = 7,616,377,528.37
  5. Step 5: Solve for x
    x = 7,616,377,528.37/98,480.28
  6. Step 6: Final answer
    x = 77,339.11

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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.