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Finding the Fourth Proportional to 77,274.51, 115,911.77 and 42,195.03

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Solution

The fourth proportional to 77,274.51, 115,911.77 and 42,195.03 is: 63,292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,274.51 : 115,911.77 = 42,195.03 : x
  2. Step 2: Convert to fraction form
    77,274.51/115,911.77 = 42,195.03/x
  3. Step 3: Cross multiply
    77,274.51x = 115,911.77 × 42,195.03
  4. Step 4: Simplify right side
    77,274.51x = 4,890,900,612.50
  5. Step 5: Solve for x
    x = 4,890,900,612.50/77,274.51
  6. Step 6: Final answer
    x = 63,292.55

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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.