Home / 87,690.56-121,015.69-49,962.38

Finding the Fourth Proportional to 87,690.56, 121,015.69 and 49,962.38

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Solution

The fourth proportional to 87,690.56, 121,015.69 and 49,962.38 is: 68,949.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.56 : 121,015.69 = 49,962.38 : x
  2. Step 2: Convert to fraction form
    87,690.56/121,015.69 = 49,962.38/x
  3. Step 3: Cross multiply
    87,690.56x = 121,015.69 × 49,962.38
  4. Step 4: Simplify right side
    87,690.56x = 6,046,231,159.76
  5. Step 5: Solve for x
    x = 6,046,231,159.76/87,690.56
  6. Step 6: Final answer
    x = 68,949.63

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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.