Home / 66,909.12-100,378.88-22,534.40

Finding the Fourth Proportional to 66,909.12, 100,378.88 and 22,534.40

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Solution

The fourth proportional to 66,909.12, 100,378.88 and 22,534.40 is: 33,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,909.12 : 100,378.88 = 22,534.40 : x
  2. Step 2: Convert to fraction form
    66,909.12/100,378.88 = 22,534.40/x
  3. Step 3: Cross multiply
    66,909.12x = 100,378.88 × 22,534.40
  4. Step 4: Simplify right side
    66,909.12x = 2,261,977,833.47
  5. Step 5: Solve for x
    x = 2,261,977,833.47/66,909.12
  6. Step 6: Final answer
    x = 33,806.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.