Home / 87,137.66-130,706.54-42,754.11

Finding the Fourth Proportional to 87,137.66, 130,706.54 and 42,754.11

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Solution

The fourth proportional to 87,137.66, 130,706.54 and 42,754.11 is: 64,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,137.66 : 130,706.54 = 42,754.11 : x
  2. Step 2: Convert to fraction form
    87,137.66/130,706.54 = 42,754.11/x
  3. Step 3: Cross multiply
    87,137.66x = 130,706.54 × 42,754.11
  4. Step 4: Simplify right side
    87,137.66x = 5,588,241,575.11
  5. Step 5: Solve for x
    x = 5,588,241,575.11/87,137.66
  6. Step 6: Final answer
    x = 64,131.19

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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.