Home / 98,436.40-135,795-64,429.92

Finding the Fourth Proportional to 98,436.40, 135,795 and 64,429.92

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Solution

The fourth proportional to 98,436.40, 135,795 and 64,429.92 is: 88,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,436.40 : 135,795 = 64,429.92 : x
  2. Step 2: Convert to fraction form
    98,436.40/135,795 = 64,429.92/x
  3. Step 3: Cross multiply
    98,436.40x = 135,795 × 64,429.92
  4. Step 4: Simplify right side
    98,436.40x = 8,749,260,986.40
  5. Step 5: Solve for x
    x = 8,749,260,986.40/98,436.40
  6. Step 6: Final answer
    x = 88,882.37

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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.