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Finding the Fourth Proportional to 90,399.62, 124,746.26 and 50,111.30

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Solution

The fourth proportional to 90,399.62, 124,746.26 and 50,111.30 is: 69,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,399.62 : 124,746.26 = 50,111.30 : x
  2. Step 2: Convert to fraction form
    90,399.62/124,746.26 = 50,111.30/x
  3. Step 3: Cross multiply
    90,399.62x = 124,746.26 × 50,111.30
  4. Step 4: Simplify right side
    90,399.62x = 6,251,197,258.74
  5. Step 5: Solve for x
    x = 6,251,197,258.74/90,399.62
  6. Step 6: Final answer
    x = 69,150.70

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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.