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Finding the Fourth Proportional to 99,818.92, 137,748.30 and 56,797.48

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Solution

The fourth proportional to 99,818.92, 137,748.30 and 56,797.48 is: 78,379.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,818.92 : 137,748.30 = 56,797.48 : x
  2. Step 2: Convert to fraction form
    99,818.92/137,748.30 = 56,797.48/x
  3. Step 3: Cross multiply
    99,818.92x = 137,748.30 × 56,797.48
  4. Step 4: Simplify right side
    99,818.92x = 7,823,755,886.06
  5. Step 5: Solve for x
    x = 7,823,755,886.06/99,818.92
  6. Step 6: Final answer
    x = 78,379.49

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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.