Home / 74,143.76-102,317.87-40,151.47

Finding the Fourth Proportional to 74,143.76, 102,317.87 and 40,151.47

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Solution

The fourth proportional to 74,143.76, 102,317.87 and 40,151.47 is: 55,408.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,143.76 : 102,317.87 = 40,151.47 : x
  2. Step 2: Convert to fraction form
    74,143.76/102,317.87 = 40,151.47/x
  3. Step 3: Cross multiply
    74,143.76x = 102,317.87 × 40,151.47
  4. Step 4: Simplify right side
    74,143.76x = 4,108,212,887.77
  5. Step 5: Solve for x
    x = 4,108,212,887.77/74,143.76
  6. Step 6: Final answer
    x = 55,408.75

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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.