Home / 90,103.75-124,342.35-49,818.53

Finding the Fourth Proportional to 90,103.75, 124,342.35 and 49,818.53

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Solution

The fourth proportional to 90,103.75, 124,342.35 and 49,818.53 is: 68,749.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,103.75 : 124,342.35 = 49,818.53 : x
  2. Step 2: Convert to fraction form
    90,103.75/124,342.35 = 49,818.53/x
  3. Step 3: Cross multiply
    90,103.75x = 124,342.35 × 49,818.53
  4. Step 4: Simplify right side
    90,103.75x = 6,194,553,093.75
  5. Step 5: Solve for x
    x = 6,194,553,093.75/90,103.75
  6. Step 6: Final answer
    x = 68,749.12

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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.