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Finding the Fourth Proportional to 98,360, 135,736.80 and 53,648

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Solution

The fourth proportional to 98,360, 135,736.80 and 53,648 is: 74,034.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,360 : 135,736.80 = 53,648 : x
  2. Step 2: Convert to fraction form
    98,360/135,736.80 = 53,648/x
  3. Step 3: Cross multiply
    98,360x = 135,736.80 × 53,648
  4. Step 4: Simplify right side
    98,360x = 7,282,007,846.40
  5. Step 5: Solve for x
    x = 7,282,007,846.40/98,360
  6. Step 6: Final answer
    x = 74,034.24

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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.