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Finding the Fourth Proportional to 74,510.53, 102,825.02 and 40,519.39

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Solution

The fourth proportional to 74,510.53, 102,825.02 and 40,519.39 is: 55,917.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,510.53 : 102,825.02 = 40,519.39 : x
  2. Step 2: Convert to fraction form
    74,510.53/102,825.02 = 40,519.39/x
  3. Step 3: Cross multiply
    74,510.53x = 102,825.02 × 40,519.39
  4. Step 4: Simplify right side
    74,510.53x = 4,166,406,779.43
  5. Step 5: Solve for x
    x = 4,166,406,779.43/74,510.53
  6. Step 6: Final answer
    x = 55,917.02

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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.