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Finding the Fourth Proportional to 99,730.64, 137,626.44 and 55,017.68

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Solution

The fourth proportional to 99,730.64, 137,626.44 and 55,017.68 is: 75,923.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,730.64 : 137,626.44 = 55,017.68 : x
  2. Step 2: Convert to fraction form
    99,730.64/137,626.44 = 55,017.68/x
  3. Step 3: Cross multiply
    99,730.64x = 137,626.44 × 55,017.68
  4. Step 4: Simplify right side
    99,730.64x = 7,571,887,435.46
  5. Step 5: Solve for x
    x = 7,571,887,435.46/99,730.64
  6. Step 6: Final answer
    x = 75,923.38

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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.