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Finding the Fourth Proportional to 39,564.80, 59,476.80 and 27,958.40

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Solution

The fourth proportional to 39,564.80, 59,476.80 and 27,958.40 is: 42,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,564.80 : 59,476.80 = 27,958.40 : x
  2. Step 2: Convert to fraction form
    39,564.80/59,476.80 = 27,958.40/x
  3. Step 3: Cross multiply
    39,564.80x = 59,476.80 × 27,958.40
  4. Step 4: Simplify right side
    39,564.80x = 1,662,876,165.12
  5. Step 5: Solve for x
    x = 1,662,876,165.12/39,564.80
  6. Step 6: Final answer
    x = 42,029.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.