Home / 86,755,342.20-130,345,589.70-65,231,981.70

Finding the Fourth Proportional to 86,755,342.20, 130,345,589.70 and 65,231,981.70

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Solution

The fourth proportional to 86,755,342.20, 130,345,589.70 and 65,231,981.70 is: 98,007,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,755,342.20 : 130,345,589.70 = 65,231,981.70 : x
  2. Step 2: Convert to fraction form
    86,755,342.20/130,345,589.70 = 65,231,981.70/x
  3. Step 3: Cross multiply
    86,755,342.20x = 130,345,589.70 × 65,231,981.70
  4. Step 4: Simplify right side
    86,755,342.20x = 8,502,701,121,986,109
  5. Step 5: Solve for x
    x = 8,502,701,121,986,109/86,755,342.20
  6. Step 6: Final answer
    x = 98,007,810.31

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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.