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Finding the Fourth Proportional to 99,740.74, 137,650.44 and 56,733.70

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Solution

The fourth proportional to 99,740.74, 137,650.44 and 56,733.70 is: 78,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,740.74 : 137,650.44 = 56,733.70 : x
  2. Step 2: Convert to fraction form
    99,740.74/137,650.44 = 56,733.70/x
  3. Step 3: Cross multiply
    99,740.74x = 137,650.44 × 56,733.70
  4. Step 4: Simplify right side
    99,740.74x = 7,809,418,767.83
  5. Step 5: Solve for x
    x = 7,809,418,767.83/99,740.74
  6. Step 6: Final answer
    x = 78,297.18

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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.