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Finding the Fourth Proportional to 98,315.36, 135,674.88 and 53,603.36

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Solution

The fourth proportional to 98,315.36, 135,674.88 and 53,603.36 is: 73,972.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,315.36 : 135,674.88 = 53,603.36 : x
  2. Step 2: Convert to fraction form
    98,315.36/135,674.88 = 53,603.36/x
  3. Step 3: Cross multiply
    98,315.36x = 135,674.88 × 53,603.36
  4. Step 4: Simplify right side
    98,315.36x = 7,272,629,435.60
  5. Step 5: Solve for x
    x = 7,272,629,435.60/98,315.36
  6. Step 6: Final answer
    x = 73,972.46

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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.