Home / 79,723,276.80-119,584,915.20-78,211,622.40

Finding the Fourth Proportional to 79,723,276.80, 119,584,915.20 and 78,211,622.40

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Solution

The fourth proportional to 79,723,276.80, 119,584,915.20 and 78,211,622.40 is: 117,317,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,723,276.80 : 119,584,915.20 = 78,211,622.40 : x
  2. Step 2: Convert to fraction form
    79,723,276.80/119,584,915.20 = 78,211,622.40/x
  3. Step 3: Cross multiply
    79,723,276.80x = 119,584,915.20 × 78,211,622.40
  4. Step 4: Simplify right side
    79,723,276.80x = 9,352,930,232,358,422
  5. Step 5: Solve for x
    x = 9,352,930,232,358,422/79,723,276.80
  6. Step 6: Final answer
    x = 117,317,433.60

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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.