Home / 86,915.20-120,041.64-58,571.68

Finding the Fourth Proportional to 86,915.20, 120,041.64 and 58,571.68

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Solution

The fourth proportional to 86,915.20, 120,041.64 and 58,571.68 is: 80,895.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.20 : 120,041.64 = 58,571.68 : x
  2. Step 2: Convert to fraction form
    86,915.20/120,041.64 = 58,571.68/x
  3. Step 3: Cross multiply
    86,915.20x = 120,041.64 × 58,571.68
  4. Step 4: Simplify right side
    86,915.20x = 7,031,040,524.76
  5. Step 5: Solve for x
    x = 7,031,040,524.76/86,915.20
  6. Step 6: Final answer
    x = 80,895.41

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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.