Home / 93,451.08-128,979.22-55,727.76

Finding the Fourth Proportional to 93,451.08, 128,979.22 and 55,727.76

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Solution

The fourth proportional to 93,451.08, 128,979.22 and 55,727.76 is: 76,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,451.08 : 128,979.22 = 55,727.76 : x
  2. Step 2: Convert to fraction form
    93,451.08/128,979.22 = 55,727.76/x
  3. Step 3: Cross multiply
    93,451.08x = 128,979.22 × 55,727.76
  4. Step 4: Simplify right side
    93,451.08x = 7,187,723,017.15
  5. Step 5: Solve for x
    x = 7,187,723,017.15/93,451.08
  6. Step 6: Final answer
    x = 76,914.29

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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.