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Finding the Fourth Proportional to 81,846.40, 112,946.16 and 50,015.20

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Solution

The fourth proportional to 81,846.40, 112,946.16 and 50,015.20 is: 69,019.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,846.40 : 112,946.16 = 50,015.20 : x
  2. Step 2: Convert to fraction form
    81,846.40/112,946.16 = 50,015.20/x
  3. Step 3: Cross multiply
    81,846.40x = 112,946.16 × 50,015.20
  4. Step 4: Simplify right side
    81,846.40x = 5,649,024,781.63
  5. Step 5: Solve for x
    x = 5,649,024,781.63/81,846.40
  6. Step 6: Final answer
    x = 69,019.83

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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.