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Finding the Fourth Proportional to 90,392.72, 124,742.87 and 50,107.16

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Solution

The fourth proportional to 90,392.72, 124,742.87 and 50,107.16 is: 69,148.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,392.72 : 124,742.87 = 50,107.16 : x
  2. Step 2: Convert to fraction form
    90,392.72/124,742.87 = 50,107.16/x
  3. Step 3: Cross multiply
    90,392.72x = 124,742.87 × 50,107.16
  4. Step 4: Simplify right side
    90,392.72x = 6,250,510,071.70
  5. Step 5: Solve for x
    x = 6,250,510,071.70/90,392.72
  6. Step 6: Final answer
    x = 69,148.38

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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.