Home / 87,688.76-120,980.88-49,936.28

Finding the Fourth Proportional to 87,688.76, 120,980.88 and 49,936.28

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Solution

The fourth proportional to 87,688.76, 120,980.88 and 49,936.28 is: 68,895.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,688.76 : 120,980.88 = 49,936.28 : x
  2. Step 2: Convert to fraction form
    87,688.76/120,980.88 = 49,936.28/x
  3. Step 3: Cross multiply
    87,688.76x = 120,980.88 × 49,936.28
  4. Step 4: Simplify right side
    87,688.76x = 6,041,335,098.33
  5. Step 5: Solve for x
    x = 6,041,335,098.33/87,688.76
  6. Step 6: Final answer
    x = 68,895.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.