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Finding the Fourth Proportional to 39,805.32, 54,931.14 and 22,809.64

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Solution

The fourth proportional to 39,805.32, 54,931.14 and 22,809.64 is: 31,477.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,805.32 : 54,931.14 = 22,809.64 : x
  2. Step 2: Convert to fraction form
    39,805.32/54,931.14 = 22,809.64/x
  3. Step 3: Cross multiply
    39,805.32x = 54,931.14 × 22,809.64
  4. Step 4: Simplify right side
    39,805.32x = 1,252,959,528.19
  5. Step 5: Solve for x
    x = 1,252,959,528.19/39,805.32
  6. Step 6: Final answer
    x = 31,477.19

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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.