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Finding the Fourth Proportional to 39,644.72, 59,477 and 27,980.72

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Solution

The fourth proportional to 39,644.72, 59,477 and 27,980.72 is: 41,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,644.72 : 59,477 = 27,980.72 : x
  2. Step 2: Convert to fraction form
    39,644.72/59,477 = 27,980.72/x
  3. Step 3: Cross multiply
    39,644.72x = 59,477 × 27,980.72
  4. Step 4: Simplify right side
    39,644.72x = 1,664,209,283.44
  5. Step 5: Solve for x
    x = 1,664,209,283.44/39,644.72
  6. Step 6: Final answer
    x = 41,978.08

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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.