Home / 72,718,093.80-109,077,140.70-66,765,954.60

Finding the Fourth Proportional to 72,718,093.80, 109,077,140.70 and 66,765,954.60

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Solution

The fourth proportional to 72,718,093.80, 109,077,140.70 and 66,765,954.60 is: 100,148,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,718,093.80 : 109,077,140.70 = 66,765,954.60 : x
  2. Step 2: Convert to fraction form
    72,718,093.80/109,077,140.70 = 66,765,954.60/x
  3. Step 3: Cross multiply
    72,718,093.80x = 109,077,140.70 × 66,765,954.60
  4. Step 4: Simplify right side
    72,718,093.80x = 7,282,639,423,874,013
  5. Step 5: Solve for x
    x = 7,282,639,423,874,013/72,718,093.80
  6. Step 6: Final answer
    x = 100,148,931.90

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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.