Home / 74,431.18-102,709.07-42,592.78

Finding the Fourth Proportional to 74,431.18, 102,709.07 and 42,592.78

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Solution

The fourth proportional to 74,431.18, 102,709.07 and 42,592.78 is: 58,774.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,431.18 : 102,709.07 = 42,592.78 : x
  2. Step 2: Convert to fraction form
    74,431.18/102,709.07 = 42,592.78/x
  3. Step 3: Cross multiply
    74,431.18x = 102,709.07 × 42,592.78
  4. Step 4: Simplify right side
    74,431.18x = 4,374,664,822.51
  5. Step 5: Solve for x
    x = 4,374,664,822.51/74,431.18
  6. Step 6: Final answer
    x = 58,774.63

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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.