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Finding the Fourth Proportional to 48,135.84, 72,208.84 and 12,602.76

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Solution

The fourth proportional to 48,135.84, 72,208.84 and 12,602.76 is: 18,905.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,135.84 : 72,208.84 = 12,602.76 : x
  2. Step 2: Convert to fraction form
    48,135.84/72,208.84 = 12,602.76/x
  3. Step 3: Cross multiply
    48,135.84x = 72,208.84 × 12,602.76
  4. Step 4: Simplify right side
    48,135.84x = 910,030,680.40
  5. Step 5: Solve for x
    x = 910,030,680.40/48,135.84
  6. Step 6: Final answer
    x = 18,905.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.