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Finding the Fourth Proportional to 80,913.51, 111,662.13 and 45,099.69

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Solution

The fourth proportional to 80,913.51, 111,662.13 and 45,099.69 is: 62,238.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,913.51 : 111,662.13 = 45,099.69 : x
  2. Step 2: Convert to fraction form
    80,913.51/111,662.13 = 45,099.69/x
  3. Step 3: Cross multiply
    80,913.51x = 111,662.13 × 45,099.69
  4. Step 4: Simplify right side
    80,913.51x = 5,035,927,447.74
  5. Step 5: Solve for x
    x = 5,035,927,447.74/80,913.51
  6. Step 6: Final answer
    x = 62,238.40

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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.