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Finding the Fourth Proportional to 93,419, 128,918.22 and 59,885

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Solution

The fourth proportional to 93,419, 128,918.22 and 59,885 is: 82,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,419 : 128,918.22 = 59,885 : x
  2. Step 2: Convert to fraction form
    93,419/128,918.22 = 59,885/x
  3. Step 3: Cross multiply
    93,419x = 128,918.22 × 59,885
  4. Step 4: Simplify right side
    93,419x = 7,720,267,604.70
  5. Step 5: Solve for x
    x = 7,720,267,604.70/93,419
  6. Step 6: Final answer
    x = 82,641.30

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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.