Home / 75,089.86-103,454.07-61,639.81

Finding the Fourth Proportional to 75,089.86, 103,454.07 and 61,639.81

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Solution

The fourth proportional to 75,089.86, 103,454.07 and 61,639.81 is: 84,923.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,089.86 : 103,454.07 = 61,639.81 : x
  2. Step 2: Convert to fraction form
    75,089.86/103,454.07 = 61,639.81/x
  3. Step 3: Cross multiply
    75,089.86x = 103,454.07 × 61,639.81
  4. Step 4: Simplify right side
    75,089.86x = 6,376,889,218.53
  5. Step 5: Solve for x
    x = 6,376,889,218.53/75,089.86
  6. Step 6: Final answer
    x = 84,923.44

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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.