Home / 71,920,007.20-107,880,010.80-70,725,613.60

Finding the Fourth Proportional to 71,920,007.20, 107,880,010.80 and 70,725,613.60

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Solution

The fourth proportional to 71,920,007.20, 107,880,010.80 and 70,725,613.60 is: 106,088,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,920,007.20 : 107,880,010.80 = 70,725,613.60 : x
  2. Step 2: Convert to fraction form
    71,920,007.20/107,880,010.80 = 70,725,613.60/x
  3. Step 3: Cross multiply
    71,920,007.20x = 107,880,010.80 × 70,725,613.60
  4. Step 4: Simplify right side
    71,920,007.20x = 7,629,879,959,004,626
  5. Step 5: Solve for x
    x = 7,629,879,959,004,626/71,920,007.20
  6. Step 6: Final answer
    x = 106,088,420.40

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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.