Home / 87,113.86-130,618.51-30,169

Finding the Fourth Proportional to 87,113.86, 130,618.51 and 30,169

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Solution

The fourth proportional to 87,113.86, 130,618.51 and 30,169 is: 45,235.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,113.86 : 130,618.51 = 30,169 : x
  2. Step 2: Convert to fraction form
    87,113.86/130,618.51 = 30,169/x
  3. Step 3: Cross multiply
    87,113.86x = 130,618.51 × 30,169
  4. Step 4: Simplify right side
    87,113.86x = 3,940,629,828.19
  5. Step 5: Solve for x
    x = 3,940,629,828.19/87,113.86
  6. Step 6: Final answer
    x = 45,235.39

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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.