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Finding the Fourth Proportional to 78,048.01, 117,051.51 and 33,664.90

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Solution

The fourth proportional to 78,048.01, 117,051.51 and 33,664.90 is: 50,488.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,048.01 : 117,051.51 = 33,664.90 : x
  2. Step 2: Convert to fraction form
    78,048.01/117,051.51 = 33,664.90/x
  3. Step 3: Cross multiply
    78,048.01x = 117,051.51 × 33,664.90
  4. Step 4: Simplify right side
    78,048.01x = 3,940,527,432.09
  5. Step 5: Solve for x
    x = 3,940,527,432.09/78,048.01
  6. Step 6: Final answer
    x = 50,488.51

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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.