Home / 77,419.27-106,813.36-45,146.61

Finding the Fourth Proportional to 77,419.27, 106,813.36 and 45,146.61

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Solution

The fourth proportional to 77,419.27, 106,813.36 and 45,146.61 is: 62,287.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,419.27 : 106,813.36 = 45,146.61 : x
  2. Step 2: Convert to fraction form
    77,419.27/106,813.36 = 45,146.61/x
  3. Step 3: Cross multiply
    77,419.27x = 106,813.36 × 45,146.61
  4. Step 4: Simplify right side
    77,419.27x = 4,822,261,106.71
  5. Step 5: Solve for x
    x = 4,822,261,106.71/77,419.27
  6. Step 6: Final answer
    x = 62,287.61

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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.