Home / 90,364.30-124,703.06-50,078.75

Finding the Fourth Proportional to 90,364.30, 124,703.06 and 50,078.75

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Solution

The fourth proportional to 90,364.30, 124,703.06 and 50,078.75 is: 69,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,364.30 : 124,703.06 = 50,078.75 : x
  2. Step 2: Convert to fraction form
    90,364.30/124,703.06 = 50,078.75/x
  3. Step 3: Cross multiply
    90,364.30x = 124,703.06 × 50,078.75
  4. Step 4: Simplify right side
    90,364.30x = 6,244,972,492.07
  5. Step 5: Solve for x
    x = 6,244,972,492.07/90,364.30
  6. Step 6: Final answer
    x = 69,108.85

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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.