Home / 87,989.64-121,397.16-49,745.48

Finding the Fourth Proportional to 87,989.64, 121,397.16 and 49,745.48

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Solution

The fourth proportional to 87,989.64, 121,397.16 and 49,745.48 is: 68,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,989.64 : 121,397.16 = 49,745.48 : x
  2. Step 2: Convert to fraction form
    87,989.64/121,397.16 = 49,745.48/x
  3. Step 3: Cross multiply
    87,989.64x = 121,397.16 × 49,745.48
  4. Step 4: Simplify right side
    87,989.64x = 6,038,959,994.84
  5. Step 5: Solve for x
    x = 6,038,959,994.84/87,989.64
  6. Step 6: Final answer
    x = 68,632.63

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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.