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Finding the Fourth Proportional to 55,032.72, 82,549.08 and 19,972.32

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Solution

The fourth proportional to 55,032.72, 82,549.08 and 19,972.32 is: 29,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,032.72 : 82,549.08 = 19,972.32 : x
  2. Step 2: Convert to fraction form
    55,032.72/82,549.08 = 19,972.32/x
  3. Step 3: Cross multiply
    55,032.72x = 82,549.08 × 19,972.32
  4. Step 4: Simplify right side
    55,032.72x = 1,648,696,641.47
  5. Step 5: Solve for x
    x = 1,648,696,641.47/55,032.72
  6. Step 6: Final answer
    x = 29,958.48

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Similar ratio
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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.