Home / 87,629.80-131,444.70-77,492.20

Finding the Fourth Proportional to 87,629.80, 131,444.70 and 77,492.20

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Solution

The fourth proportional to 87,629.80, 131,444.70 and 77,492.20 is: 116,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.80 : 131,444.70 = 77,492.20 : x
  2. Step 2: Convert to fraction form
    87,629.80/131,444.70 = 77,492.20/x
  3. Step 3: Cross multiply
    87,629.80x = 131,444.70 × 77,492.20
  4. Step 4: Simplify right side
    87,629.80x = 10,185,938,981.34
  5. Step 5: Solve for x
    x = 10,185,938,981.34/87,629.80
  6. Step 6: Final answer
    x = 116,238.30

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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.