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Finding the Fourth Proportional to 54,051.71, 81,007.02 and 39,109.16

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Solution

The fourth proportional to 54,051.71, 81,007.02 and 39,109.16 is: 58,612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,051.71 : 81,007.02 = 39,109.16 : x
  2. Step 2: Convert to fraction form
    54,051.71/81,007.02 = 39,109.16/x
  3. Step 3: Cross multiply
    54,051.71x = 81,007.02 × 39,109.16
  4. Step 4: Simplify right side
    54,051.71x = 3,168,116,101.27
  5. Step 5: Solve for x
    x = 3,168,116,101.27/54,051.71
  6. Step 6: Final answer
    x = 58,612.70

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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.