Home / 66,145.28-91,281.92-36,339.20

Finding the Fourth Proportional to 66,145.28, 91,281.92 and 36,339.20

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Solution

The fourth proportional to 66,145.28, 91,281.92 and 36,339.20 is: 50,148.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.28 : 91,281.92 = 36,339.20 : x
  2. Step 2: Convert to fraction form
    66,145.28/91,281.92 = 36,339.20/x
  3. Step 3: Cross multiply
    66,145.28x = 91,281.92 × 36,339.20
  4. Step 4: Simplify right side
    66,145.28x = 3,317,111,947.26
  5. Step 5: Solve for x
    x = 3,317,111,947.26/66,145.28
  6. Step 6: Final answer
    x = 50,148.88

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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.