Home / 77,589.11-116,362.66-21,415.71

Finding the Fourth Proportional to 77,589.11, 116,362.66 and 21,415.71

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Solution

The fourth proportional to 77,589.11, 116,362.66 and 21,415.71 is: 32,117.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,589.11 : 116,362.66 = 21,415.71 : x
  2. Step 2: Convert to fraction form
    77,589.11/116,362.66 = 21,415.71/x
  3. Step 3: Cross multiply
    77,589.11x = 116,362.66 × 21,415.71
  4. Step 4: Simplify right side
    77,589.11x = 2,491,988,981.39
  5. Step 5: Solve for x
    x = 2,491,988,981.39/77,589.11
  6. Step 6: Final answer
    x = 32,117.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.