Home / 87,804.89-121,171.05-47,518.64

Finding the Fourth Proportional to 87,804.89, 121,171.05 and 47,518.64

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Solution

The fourth proportional to 87,804.89, 121,171.05 and 47,518.64 is: 65,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,804.89 : 121,171.05 = 47,518.64 : x
  2. Step 2: Convert to fraction form
    87,804.89/121,171.05 = 47,518.64/x
  3. Step 3: Cross multiply
    87,804.89x = 121,171.05 × 47,518.64
  4. Step 4: Simplify right side
    87,804.89x = 5,757,882,897.52
  5. Step 5: Solve for x
    x = 5,757,882,897.52/87,804.89
  6. Step 6: Final answer
    x = 65,575.88

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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.