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Finding the Fourth Proportional to 87,191.99, 130,800.29 and 28,007.82

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Solution

The fourth proportional to 87,191.99, 130,800.29 and 28,007.82 is: 42,015.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,191.99 : 130,800.29 = 28,007.82 : x
  2. Step 2: Convert to fraction form
    87,191.99/130,800.29 = 28,007.82/x
  3. Step 3: Cross multiply
    87,191.99x = 130,800.29 × 28,007.82
  4. Step 4: Simplify right side
    87,191.99x = 3,663,431,305.27
  5. Step 5: Solve for x
    x = 3,663,431,305.27/87,191.99
  6. Step 6: Final answer
    x = 42,015.69

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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.