Home / 87,984.63-121,390.25-49,740.48

Finding the Fourth Proportional to 87,984.63, 121,390.25 and 49,740.48

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Solution

The fourth proportional to 87,984.63, 121,390.25 and 49,740.48 is: 68,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,984.63 : 121,390.25 = 49,740.48 : x
  2. Step 2: Convert to fraction form
    87,984.63/121,390.25 = 49,740.48/x
  3. Step 3: Cross multiply
    87,984.63x = 121,390.25 × 49,740.48
  4. Step 4: Simplify right side
    87,984.63x = 6,038,009,053.62
  5. Step 5: Solve for x
    x = 6,038,009,053.62/87,984.63
  6. Step 6: Final answer
    x = 68,625.73

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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.