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Finding the Fourth Proportional to 72,805.84, 100,503.05 and 48,946.35

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Solution

The fourth proportional to 72,805.84, 100,503.05 and 48,946.35 is: 67,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,805.84 : 100,503.05 = 48,946.35 : x
  2. Step 2: Convert to fraction form
    72,805.84/100,503.05 = 48,946.35/x
  3. Step 3: Cross multiply
    72,805.84x = 100,503.05 × 48,946.35
  4. Step 4: Simplify right side
    72,805.84x = 4,919,257,461.37
  5. Step 5: Solve for x
    x = 4,919,257,461.37/72,805.84
  6. Step 6: Final answer
    x = 67,566.80

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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.