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Finding the Fourth Proportional to 74,115, 110,893.66 and 51,971.63

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Solution

The fourth proportional to 74,115, 110,893.66 and 51,971.63 is: 77,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,115 : 110,893.66 = 51,971.63 : x
  2. Step 2: Convert to fraction form
    74,115/110,893.66 = 51,971.63/x
  3. Step 3: Cross multiply
    74,115x = 110,893.66 × 51,971.63
  4. Step 4: Simplify right side
    74,115x = 5,763,323,582.47
  5. Step 5: Solve for x
    x = 5,763,323,582.47/74,115
  6. Step 6: Final answer
    x = 77,761.90

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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.