Home / 66,428,139.70-99,642,209.55-40,786,002.10

Finding the Fourth Proportional to 66,428,139.70, 99,642,209.55 and 40,786,002.10

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Solution

The fourth proportional to 66,428,139.70, 99,642,209.55 and 40,786,002.10 is: 61,179,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,139.70 : 99,642,209.55 = 40,786,002.10 : x
  2. Step 2: Convert to fraction form
    66,428,139.70/99,642,209.55 = 40,786,002.10/x
  3. Step 3: Cross multiply
    66,428,139.70x = 99,642,209.55 × 40,786,002.10
  4. Step 4: Simplify right side
    66,428,139.70x = 4,064,007,367,954,940
  5. Step 5: Solve for x
    x = 4,064,007,367,954,940/66,428,139.70
  6. Step 6: Final answer
    x = 61,179,003.15

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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.