Home / 74,128.86-102,309.75-42,299.10

Finding the Fourth Proportional to 74,128.86, 102,309.75 and 42,299.10

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Solution

The fourth proportional to 74,128.86, 102,309.75 and 42,299.10 is: 58,379.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,128.86 : 102,309.75 = 42,299.10 : x
  2. Step 2: Convert to fraction form
    74,128.86/102,309.75 = 42,299.10/x
  3. Step 3: Cross multiply
    74,128.86x = 102,309.75 × 42,299.10
  4. Step 4: Simplify right side
    74,128.86x = 4,327,610,346.23
  5. Step 5: Solve for x
    x = 4,327,610,346.23/74,128.86
  6. Step 6: Final answer
    x = 58,379.56

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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.