Home / 93,131.28-128,520.96-50,689.71

Finding the Fourth Proportional to 93,131.28, 128,520.96 and 50,689.71

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Solution

The fourth proportional to 93,131.28, 128,520.96 and 50,689.71 is: 69,951.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,131.28 : 128,520.96 = 50,689.71 : x
  2. Step 2: Convert to fraction form
    93,131.28/128,520.96 = 50,689.71/x
  3. Step 3: Cross multiply
    93,131.28x = 128,520.96 × 50,689.71
  4. Step 4: Simplify right side
    93,131.28x = 6,514,690,191.32
  5. Step 5: Solve for x
    x = 6,514,690,191.32/93,131.28
  6. Step 6: Final answer
    x = 69,951.69

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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.