Home / 87,072.30-130,433.43-45,431.82

Finding the Fourth Proportional to 87,072.30, 130,433.43 and 45,431.82

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Solution

The fourth proportional to 87,072.30, 130,433.43 and 45,431.82 is: 68,056.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,072.30 : 130,433.43 = 45,431.82 : x
  2. Step 2: Convert to fraction form
    87,072.30/130,433.43 = 45,431.82/x
  3. Step 3: Cross multiply
    87,072.30x = 130,433.43 × 45,431.82
  4. Step 4: Simplify right side
    87,072.30x = 5,925,828,113.74
  5. Step 5: Solve for x
    x = 5,925,828,113.74/87,072.30
  6. Step 6: Final answer
    x = 68,056.41

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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.