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Finding the Fourth Proportional to 170,041.40, 255,051.30 and 57,721.40

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Solution

The fourth proportional to 170,041.40, 255,051.30 and 57,721.40 is: 86,578.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,041.40 : 255,051.30 = 57,721.40 : x
  2. Step 2: Convert to fraction form
    170,041.40/255,051.30 = 57,721.40/x
  3. Step 3: Cross multiply
    170,041.40x = 255,051.30 × 57,721.40
  4. Step 4: Simplify right side
    170,041.40x = 14,721,918,107.82
  5. Step 5: Solve for x
    x = 14,721,918,107.82/170,041.40
  6. Step 6: Final answer
    x = 86,578.43

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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.