Home / 104,531.76-144,256.32-56,787.84

Finding the Fourth Proportional to 104,531.76, 144,256.32 and 56,787.84

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Solution

The fourth proportional to 104,531.76, 144,256.32 and 56,787.84 is: 78,368.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,531.76 : 144,256.32 = 56,787.84 : x
  2. Step 2: Convert to fraction form
    104,531.76/144,256.32 = 56,787.84/x
  3. Step 3: Cross multiply
    104,531.76x = 144,256.32 × 56,787.84
  4. Step 4: Simplify right side
    104,531.76x = 8,192,004,819.15
  5. Step 5: Solve for x
    x = 8,192,004,819.15/104,531.76
  6. Step 6: Final answer
    x = 78,368.57

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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.