Home / 87,790.51-131,699.43-28,612.45

Finding the Fourth Proportional to 87,790.51, 131,699.43 and 28,612.45

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Solution

The fourth proportional to 87,790.51, 131,699.43 and 28,612.45 is: 42,923.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,790.51 : 131,699.43 = 28,612.45 : x
  2. Step 2: Convert to fraction form
    87,790.51/131,699.43 = 28,612.45/x
  3. Step 3: Cross multiply
    87,790.51x = 131,699.43 × 28,612.45
  4. Step 4: Simplify right side
    87,790.51x = 3,768,243,026.65
  5. Step 5: Solve for x
    x = 3,768,243,026.65/87,790.51
  6. Step 6: Final answer
    x = 42,923.13

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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.