Home / 82,770.40-124,069.20-45,272.80

Finding the Fourth Proportional to 82,770.40, 124,069.20 and 45,272.80

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Solution

The fourth proportional to 82,770.40, 124,069.20 and 45,272.80 is: 67,861.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,770.40 : 124,069.20 = 45,272.80 : x
  2. Step 2: Convert to fraction form
    82,770.40/124,069.20 = 45,272.80/x
  3. Step 3: Cross multiply
    82,770.40x = 124,069.20 × 45,272.80
  4. Step 4: Simplify right side
    82,770.40x = 5,616,960,077.76
  5. Step 5: Solve for x
    x = 5,616,960,077.76/82,770.40
  6. Step 6: Final answer
    x = 67,861.94

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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.