Home / 81,428.89-122,282.07-53,014.24

Finding the Fourth Proportional to 81,428.89, 122,282.07 and 53,014.24

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Solution

The fourth proportional to 81,428.89, 122,282.07 and 53,014.24 is: 79,611.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.89 : 122,282.07 = 53,014.24 : x
  2. Step 2: Convert to fraction form
    81,428.89/122,282.07 = 53,014.24/x
  3. Step 3: Cross multiply
    81,428.89x = 122,282.07 × 53,014.24
  4. Step 4: Simplify right side
    81,428.89x = 6,482,690,700.97
  5. Step 5: Solve for x
    x = 6,482,690,700.97/81,428.89
  6. Step 6: Final answer
    x = 79,611.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.