Home / 75,087.86-103,451.31-61,637.81

Finding the Fourth Proportional to 75,087.86, 103,451.31 and 61,637.81

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Solution

The fourth proportional to 75,087.86, 103,451.31 and 61,637.81 is: 84,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,087.86 : 103,451.31 = 61,637.81 : x
  2. Step 2: Convert to fraction form
    75,087.86/103,451.31 = 61,637.81/x
  3. Step 3: Cross multiply
    75,087.86x = 103,451.31 × 61,637.81
  4. Step 4: Simplify right side
    75,087.86x = 6,376,511,672.77
  5. Step 5: Solve for x
    x = 6,376,511,672.77/75,087.86
  6. Step 6: Final answer
    x = 84,920.68

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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.