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Finding the Fourth Proportional to 93,133.28, 128,519.91 and 50,690.90

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Solution

The fourth proportional to 93,133.28, 128,519.91 and 50,690.90 is: 69,951.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,133.28 : 128,519.91 = 50,690.90 : x
  2. Step 2: Convert to fraction form
    93,133.28/128,519.91 = 50,690.90/x
  3. Step 3: Cross multiply
    93,133.28x = 128,519.91 × 50,690.90
  4. Step 4: Simplify right side
    93,133.28x = 6,514,789,263.22
  5. Step 5: Solve for x
    x = 6,514,789,263.22/93,133.28
  6. Step 6: Final answer
    x = 69,951.25

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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.