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Finding the Fourth Proportional to 99,295.72, 136,994.54 and 56,270.68

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Solution

The fourth proportional to 99,295.72, 136,994.54 and 56,270.68 is: 77,634.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,295.72 : 136,994.54 = 56,270.68 : x
  2. Step 2: Convert to fraction form
    99,295.72/136,994.54 = 56,270.68/x
  3. Step 3: Cross multiply
    99,295.72x = 136,994.54 × 56,270.68
  4. Step 4: Simplify right side
    99,295.72x = 7,708,775,922.09
  5. Step 5: Solve for x
    x = 7,708,775,922.09/99,295.72
  6. Step 6: Final answer
    x = 77,634.52

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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.