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Finding the Fourth Proportional to 74,445.51, 102,751.01 and 45,789.80

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Solution

The fourth proportional to 74,445.51, 102,751.01 and 45,789.80 is: 63,199.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,445.51 : 102,751.01 = 45,789.80 : x
  2. Step 2: Convert to fraction form
    74,445.51/102,751.01 = 45,789.80/x
  3. Step 3: Cross multiply
    74,445.51x = 102,751.01 × 45,789.80
  4. Step 4: Simplify right side
    74,445.51x = 4,704,947,454.99
  5. Step 5: Solve for x
    x = 4,704,947,454.99/74,445.51
  6. Step 6: Final answer
    x = 63,199.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.