Home / 66,220.58-99,328.67-28,780.70

Finding the Fourth Proportional to 66,220.58, 99,328.67 and 28,780.70

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Solution

The fourth proportional to 66,220.58, 99,328.67 and 28,780.70 is: 43,170.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,220.58 : 99,328.67 = 28,780.70 : x
  2. Step 2: Convert to fraction form
    66,220.58/99,328.67 = 28,780.70/x
  3. Step 3: Cross multiply
    66,220.58x = 99,328.67 × 28,780.70
  4. Step 4: Simplify right side
    66,220.58x = 2,858,748,012.12
  5. Step 5: Solve for x
    x = 2,858,748,012.12/66,220.58
  6. Step 6: Final answer
    x = 43,170.09

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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.