Home / 90,021.22-124,231.79-49,737.58

Finding the Fourth Proportional to 90,021.22, 124,231.79 and 49,737.58

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Solution

The fourth proportional to 90,021.22, 124,231.79 and 49,737.58 is: 68,639.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.22 : 124,231.79 = 49,737.58 : x
  2. Step 2: Convert to fraction form
    90,021.22/124,231.79 = 49,737.58/x
  3. Step 3: Cross multiply
    90,021.22x = 124,231.79 × 49,737.58
  4. Step 4: Simplify right side
    90,021.22x = 6,178,988,593.67
  5. Step 5: Solve for x
    x = 6,178,988,593.67/90,021.22
  6. Step 6: Final answer
    x = 68,639.25

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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.