Home / 74,008.35-102,134.12-42,172.11

Finding the Fourth Proportional to 74,008.35, 102,134.12 and 42,172.11

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Solution

The fourth proportional to 74,008.35, 102,134.12 and 42,172.11 is: 58,198.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,008.35 : 102,134.12 = 42,172.11 : x
  2. Step 2: Convert to fraction form
    74,008.35/102,134.12 = 42,172.11/x
  3. Step 3: Cross multiply
    74,008.35x = 102,134.12 × 42,172.11
  4. Step 4: Simplify right side
    74,008.35x = 4,307,211,132.53
  5. Step 5: Solve for x
    x = 4,307,211,132.53/74,008.35
  6. Step 6: Final answer
    x = 58,198.99

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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.