Home / 86,985.32-120,098.21-54,329.49

Finding the Fourth Proportional to 86,985.32, 120,098.21 and 54,329.49

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Solution

The fourth proportional to 86,985.32, 120,098.21 and 54,329.49 is: 75,011.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.32 : 120,098.21 = 54,329.49 : x
  2. Step 2: Convert to fraction form
    86,985.32/120,098.21 = 54,329.49/x
  3. Step 3: Cross multiply
    86,985.32x = 120,098.21 × 54,329.49
  4. Step 4: Simplify right side
    86,985.32x = 6,524,874,227.57
  5. Step 5: Solve for x
    x = 6,524,874,227.57/86,985.32
  6. Step 6: Final answer
    x = 75,011.22

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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.