Home / 85,686,609.69-128,440,216.67-35,859,980.33

Finding the Fourth Proportional to 85,686,609.69, 128,440,216.67 and 35,859,980.33

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Solution

The fourth proportional to 85,686,609.69, 128,440,216.67 and 35,859,980.33 is: 53,752,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,686,609.69 : 128,440,216.67 = 35,859,980.33 : x
  2. Step 2: Convert to fraction form
    85,686,609.69/128,440,216.67 = 35,859,980.33/x
  3. Step 3: Cross multiply
    85,686,609.69x = 128,440,216.67 × 35,859,980.33
  4. Step 4: Simplify right side
    85,686,609.69x = 4,605,863,642,545,638
  5. Step 5: Solve for x
    x = 4,605,863,642,545,638/85,686,609.69
  6. Step 6: Final answer
    x = 53,752,431.79

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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.