Home / 74,343.02-102,590.61-40,350.78

Finding the Fourth Proportional to 74,343.02, 102,590.61 and 40,350.78

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Solution

The fourth proportional to 74,343.02, 102,590.61 and 40,350.78 is: 55,682.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,343.02 : 102,590.61 = 40,350.78 : x
  2. Step 2: Convert to fraction form
    74,343.02/102,590.61 = 40,350.78/x
  3. Step 3: Cross multiply
    74,343.02x = 102,590.61 × 40,350.78
  4. Step 4: Simplify right side
    74,343.02x = 4,139,611,134.18
  5. Step 5: Solve for x
    x = 4,139,611,134.18/74,343.02
  6. Step 6: Final answer
    x = 55,682.58

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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.