Home / 79,723,372.80-119,585,059.20-72,668,985.60

Finding the Fourth Proportional to 79,723,372.80, 119,585,059.20 and 72,668,985.60

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Solution

The fourth proportional to 79,723,372.80, 119,585,059.20 and 72,668,985.60 is: 109,003,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,723,372.80 : 119,585,059.20 = 72,668,985.60 : x
  2. Step 2: Convert to fraction form
    79,723,372.80/119,585,059.20 = 72,668,985.60/x
  3. Step 3: Cross multiply
    79,723,372.80x = 119,585,059.20 × 72,668,985.60
  4. Step 4: Simplify right side
    79,723,372.80x = 8,690,124,944,979,947
  5. Step 5: Solve for x
    x = 8,690,124,944,979,947/79,723,372.80
  6. Step 6: Final answer
    x = 109,003,478.40

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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.