Home / 259,590.09-389,366.68-70,061.25

Finding the Fourth Proportional to 259,590.09, 389,366.68 and 70,061.25

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Solution

The fourth proportional to 259,590.09, 389,366.68 and 70,061.25 is: 105,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,590.09 : 389,366.68 = 70,061.25 : x
  2. Step 2: Convert to fraction form
    259,590.09/389,366.68 = 70,061.25/x
  3. Step 3: Cross multiply
    259,590.09x = 389,366.68 × 70,061.25
  4. Step 4: Simplify right side
    259,590.09x = 27,279,518,021.06
  5. Step 5: Solve for x
    x = 27,279,518,021.06/259,590.09
  6. Step 6: Final answer
    x = 105,086.90

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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.