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Finding the Fourth Proportional to 74,703.60, 112,128.30 and 37,305.90

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Solution

The fourth proportional to 74,703.60, 112,128.30 and 37,305.90 is: 55,995.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,703.60 : 112,128.30 = 37,305.90 : x
  2. Step 2: Convert to fraction form
    74,703.60/112,128.30 = 37,305.90/x
  3. Step 3: Cross multiply
    74,703.60x = 112,128.30 × 37,305.90
  4. Step 4: Simplify right side
    74,703.60x = 4,183,047,146.97
  5. Step 5: Solve for x
    x = 4,183,047,146.97/74,703.60
  6. Step 6: Final answer
    x = 55,995.26

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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.