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Finding the Fourth Proportional to 48,347.70, 72,520.64 and 19,878.46

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Solution

The fourth proportional to 48,347.70, 72,520.64 and 19,878.46 is: 29,817.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,347.70 : 72,520.64 = 19,878.46 : x
  2. Step 2: Convert to fraction form
    48,347.70/72,520.64 = 19,878.46/x
  3. Step 3: Cross multiply
    48,347.70x = 72,520.64 × 19,878.46
  4. Step 4: Simplify right side
    48,347.70x = 1,441,598,641.41
  5. Step 5: Solve for x
    x = 1,441,598,641.41/48,347.70
  6. Step 6: Final answer
    x = 29,817.32

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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.