Home / 77,977.13-107,608.43-42,167.14

Finding the Fourth Proportional to 77,977.13, 107,608.43 and 42,167.14

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Solution

The fourth proportional to 77,977.13, 107,608.43 and 42,167.14 is: 58,190.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,977.13 : 107,608.43 = 42,167.14 : x
  2. Step 2: Convert to fraction form
    77,977.13/107,608.43 = 42,167.14/x
  3. Step 3: Cross multiply
    77,977.13x = 107,608.43 × 42,167.14
  4. Step 4: Simplify right side
    77,977.13x = 4,537,539,569.39
  5. Step 5: Solve for x
    x = 4,537,539,569.39/77,977.13
  6. Step 6: Final answer
    x = 58,190.65

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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.