Home / 87,858.50-121,251.21-54,330.98

Finding the Fourth Proportional to 87,858.50, 121,251.21 and 54,330.98

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Solution

The fourth proportional to 87,858.50, 121,251.21 and 54,330.98 is: 74,980.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,858.50 : 121,251.21 = 54,330.98 : x
  2. Step 2: Convert to fraction form
    87,858.50/121,251.21 = 54,330.98/x
  3. Step 3: Cross multiply
    87,858.50x = 121,251.21 × 54,330.98
  4. Step 4: Simplify right side
    87,858.50x = 6,587,697,065.49
  5. Step 5: Solve for x
    x = 6,587,697,065.49/87,858.50
  6. Step 6: Final answer
    x = 74,980.76

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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.