Home / 86,972.21-120,020.09-48,731.60

Finding the Fourth Proportional to 86,972.21, 120,020.09 and 48,731.60

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Solution

The fourth proportional to 86,972.21, 120,020.09 and 48,731.60 is: 67,248.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,972.21 : 120,020.09 = 48,731.60 : x
  2. Step 2: Convert to fraction form
    86,972.21/120,020.09 = 48,731.60/x
  3. Step 3: Cross multiply
    86,972.21x = 120,020.09 × 48,731.60
  4. Step 4: Simplify right side
    86,972.21x = 5,848,771,017.84
  5. Step 5: Solve for x
    x = 5,848,771,017.84/86,972.21
  6. Step 6: Final answer
    x = 67,248.73

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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.