Home / 55,531.92-76,639.32-30,385.20

Finding the Fourth Proportional to 55,531.92, 76,639.32 and 30,385.20

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Solution

The fourth proportional to 55,531.92, 76,639.32 and 30,385.20 is: 41,934.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,531.92 : 76,639.32 = 30,385.20 : x
  2. Step 2: Convert to fraction form
    55,531.92/76,639.32 = 30,385.20/x
  3. Step 3: Cross multiply
    55,531.92x = 76,639.32 × 30,385.20
  4. Step 4: Simplify right side
    55,531.92x = 2,328,701,066.06
  5. Step 5: Solve for x
    x = 2,328,701,066.06/55,531.92
  6. Step 6: Final answer
    x = 41,934.46

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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.