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Finding the Fourth Proportional to 99,486.63, 137,288.32 and 56,469.56

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Solution

The fourth proportional to 99,486.63, 137,288.32 and 56,469.56 is: 77,926.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,486.63 : 137,288.32 = 56,469.56 : x
  2. Step 2: Convert to fraction form
    99,486.63/137,288.32 = 56,469.56/x
  3. Step 3: Cross multiply
    99,486.63x = 137,288.32 × 56,469.56
  4. Step 4: Simplify right side
    99,486.63x = 7,752,610,195.92
  5. Step 5: Solve for x
    x = 7,752,610,195.92/99,486.63
  6. Step 6: Final answer
    x = 77,926.15

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1.5x scale

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.