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Finding the Fourth Proportional to 88,381, 121,965.80 and 48,637

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Solution

The fourth proportional to 88,381, 121,965.80 and 48,637 is: 67,119.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,381 : 121,965.80 = 48,637 : x
  2. Step 2: Convert to fraction form
    88,381/121,965.80 = 48,637/x
  3. Step 3: Cross multiply
    88,381x = 121,965.80 × 48,637
  4. Step 4: Simplify right side
    88,381x = 5,932,050,614.60
  5. Step 5: Solve for x
    x = 5,932,050,614.60/88,381
  6. Step 6: Final answer
    x = 67,119.07

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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.