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Finding the Fourth Proportional to 93,191.50, 128,616.42 and 55,465.75

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Solution

The fourth proportional to 93,191.50, 128,616.42 and 55,465.75 is: 76,549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,191.50 : 128,616.42 = 55,465.75 : x
  2. Step 2: Convert to fraction form
    93,191.50/128,616.42 = 55,465.75/x
  3. Step 3: Cross multiply
    93,191.50x = 128,616.42 × 55,465.75
  4. Step 4: Simplify right side
    93,191.50x = 7,133,806,197.62
  5. Step 5: Solve for x
    x = 7,133,806,197.62/93,191.50
  6. Step 6: Final answer
    x = 76,549.97

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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.