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Finding the Fourth Proportional to 98,289.36, 135,639 and 53,577.36

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Solution

The fourth proportional to 98,289.36, 135,639 and 53,577.36 is: 73,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,289.36 : 135,639 = 53,577.36 : x
  2. Step 2: Convert to fraction form
    98,289.36/135,639 = 53,577.36/x
  3. Step 3: Cross multiply
    98,289.36x = 135,639 × 53,577.36
  4. Step 4: Simplify right side
    98,289.36x = 7,267,179,533.04
  5. Step 5: Solve for x
    x = 7,267,179,533.04/98,289.36
  6. Step 6: Final answer
    x = 73,936.58

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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.