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Finding the Fourth Proportional to 98,511.50, 135,945.88 and 53,799.50

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Solution

The fourth proportional to 98,511.50, 135,945.88 and 53,799.50 is: 74,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,511.50 : 135,945.88 = 53,799.50 : x
  2. Step 2: Convert to fraction form
    98,511.50/135,945.88 = 53,799.50/x
  3. Step 3: Cross multiply
    98,511.50x = 135,945.88 × 53,799.50
  4. Step 4: Simplify right side
    98,511.50x = 7,313,820,371.06
  5. Step 5: Solve for x
    x = 7,313,820,371.06/98,511.50
  6. Step 6: Final answer
    x = 74,243.32

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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.