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Finding the Fourth Proportional to 71,512.63, 98,705.56 and 48,860.77

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Solution

The fourth proportional to 71,512.63, 98,705.56 and 48,860.77 is: 67,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,512.63 : 98,705.56 = 48,860.77 : x
  2. Step 2: Convert to fraction form
    71,512.63/98,705.56 = 48,860.77/x
  3. Step 3: Cross multiply
    71,512.63x = 98,705.56 × 48,860.77
  4. Step 4: Simplify right side
    71,512.63x = 4,822,829,664.88
  5. Step 5: Solve for x
    x = 4,822,829,664.88/71,512.63
  6. Step 6: Final answer
    x = 67,440.25

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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.